Mimachlamys subgloriosa Iredale, 1939: 350 Mimachlamys gloriosa (Reeve) Chlamys (Mimachlamys) gloriosa (Reeve) Rombouts, 1991: 29 Living Scallops of Australia and Adjacent Waters (Mollusca: Bivalvia: Pectinoidea: Propeamussiidae, Cyclochlamydidae and Pectinidae) Dijkstra, Henk H. Beu, Alan G. Records of the Australian Museum 2018 Rec. Aust. Mus. 2018-05-23 70 2 113 330 6RKH3 (Reeve, 1853) Reeve 1853 [877,1338,1181,1208] Bivalvia Pectinidae Mimachlamys Animalia Pectinida 169 282 Mollusca species gloriosa    Pecten ustulatusReeve, 1853: sp. 87, pl. 22, fig. 87.   Pecten gloriosusReeve, 1853: sp. 134, pl. 30, figs 134a–b (see Reeve, 1853, errata).   Pecten testudineusReeve, 1853: sp. 160, pl. 34, fig. 160.   Pecten similisBaird inBrenchley, 1874: 453, pl. 42, fig. 7.      Mimachlamys subgloriosa Iredale, 1939: 350, pl. 5, figs 21–21a.   Mimachlamys gloriosa(Reeve).–Allan, 1950: 280, fig. 7; Lamprell & Whitehead, 1992: [22], pl. 9, fig. 52; Slack- Smith& Bryce, 2004: 237; Raines & Poppe, 2006: 272–273, lower figs; pl. 218, figs 1–3; pl. 219, figs 1–6; Huber, 2010: 211; Dijkstra, 2013: 92, pl. 23, figs 3a–d, pl. 32, figs 1a–b.    Chlamys gloriosa(Reeve).–Coleman, 1982: 280, fig. 771; Dijkstra, (1983–1994) 1983: 19, figs; Dharma, 1992: 84, pl. 20, figs 2–2d.     Chlamys (Mimachlamys) gloriosa(Reeve).–  Rombouts, 1991: 29, pl. 11, figs 4–4c; Dharma, 2005: 248, pl. 99, figs 1a–m.   Comments on synonymy. Although Reeve introduced  Pecten ustulatus(May 1853)a few months earlier than  Pecten gloriosus(Aug 1853), we prefer to use the latter name because of its wide general acceptance. This is further complicated by Reeve (1853: caption to pl. 30, sp. 134, Jun 1853) initially applying the name  Pecten nobilisto this species, but later (Reeve, 1853: errata; evidently issued after  Figure 90. A, C–E,  Mimachlamys gloriosa(Reeve), 2 pairs; (A, C) smooth form, specimen in Fig. 88I, J; lv exterior (A), rv interior (C); (D, E) scaly form, AM C.069989, Rodds Harbour, Port Curtis, QLD; rv interior (D), lv exterior (E). B, F, G, I,  Mimachlamys punctata(Gmelin), 2 pairs; (B, I) AM C.097537, Roebuck Bay, Broome, WA; rv interior (B), lv exterior (I); (F, G) AM C.303777, Langford Reef, Whitsunday Group, GBR, QLD; rv interior (F), lv exterior (G). H, J,  Mimachlamys heterophysetaBeu & Darragh, lv only, AM C.079057, Great Australian Bight, WA, 33°12.00'S 128°43.00'E, 75–147 m; lv exterior (H), lv interior (J). Scale bars represent 30 mm(A, C–E, H, J), 20 mm(B, F, G, I). the last plate, dated Aug 1853) apparently realising that he had previously (Reeve, Nov 1852) applied the same name to pl. 1, fig. 3, now universally known as  Mimachlamys nobilis( Reeve, 1852), and providing the new name  Pecten gloriosusfor pl. 30, fig. 134a–b in the errata. As first revisers, we select the name  Pecten gloriosusto be used as the valid name for the species named  Pecten gloriosus,  Pecten testudineusand  Pecten ustulatusby Reeve (1853).   Type data.  Pecten ustulatus Reeve: figured holotype(pr) (H 65.1 mm, L 61.0 mm, D 23.9 mm) (Reeve 1853: pl. 22, fig. 87) NHMUK[not registered]. Type locality: Australia. Hereinrestricted to Moreton Bay, QLD.   Pecten gloriosusReeve: figured syntype(pr) (H 87 mm, L 84 mm) (Reeve 1853: pl. 30, fig. 134a) NHMUK1950.11.14.35;  3 syntypes NHMUK 1950.11.14.36–38. Type locality: Australia, QLD, Moreton Bay.   Pecten testudineus Reeve: three syntypes(pr) NHMUK 20010210. Type locality: “ Amboyna” [ Indonesia, Maluku, Ambon].   Pecten similis Baird: possible holotype(pr) (H 42 mm, L 38 mm) NHMUK[not registered].Type locality: “Tongatabu, Friendly group” [ Tongatapu, Tongatapu Group, Tonga].   Mimachlamys subgloriosa Iredale: holotype(pr) (H 43 mm, L 40 mm) AMC.089668 (Fig. 93B, E). Type locality: Australia, QLD, GBR, Low Isles, 9–12 fathoms [  16–22 m].   Comments on type data. The auricles of the holotypeof  Pecten ustulatusare damaged, although the auricles have been “restored” on Reeve’s figure (1853: pl. 22, fig. 87).  Additional material examined. —  AUSTRALIA:  QUEENSLAND: Torres Strait, Murray Island, 9°56'S 144°04'E, dead, beach (1 v, C.357620); N Gulfof Carpentaria, 11°34'S 138°36'E,dead,  59 m(1 v,C.346931); Gulf of Carpentaria, Mapoon, 11°58'S 141°53'E, dead (1 pr, C.348434); Gulf of Carpentaria, 10 ml SW of Mapoon, 12°05'S 141°40'E, dead,  18 m(6 v, C.014079); Gulf of Carpentaria, Albatross Bay, Weipa, 12°38'S 141°43'E, alive,  7 m(1 pr, C.094501); NE Gulfof Carpentaria, W of Weipa, 12°42'S 141°31'E,dead,  18 m(1 v,C.346944); Mid Gulf of Carpentaria, 14°09' S 139°40'E,dead,  61 m(2 v,C.346925); Gulf of Carpentaria, W of Edward River, 14°44'S 141°18'E,dead,  22 m(1 pr,C.114866); Gulf of Carpentaria, W of Edward River, 14°46'S 141°20' E,dead,  18 m(2 v,C.346941); Gulf of Carpentaria, W of Mitchell River, 15°09'S 141°22'E, dead,  14.5 m(1 v, C.346933); E Gulfof Carpentaria, W of Nassau River, 15°51'S 140°54'E,alive,  22 m(4 pr + 7 v,C.111500); E Gulfof Carpentaria, W of Nassau River, 15°53'S 140°42' E, alive,  25.6 m(5 pr, C.114871); Gulf of Carpentaria, W of  Figure 91. Distribution of  Mimachlamys gloriosa(Reeve).   Nassau River, 15°53'S 141°02'E, dead,  20 m(1 pr, C.109332); E Gulfof Carpentaria, W of Nassau River, 15°53'S 141°13' E,dead,  11 m(1 v,C.346932); E Gulfof Carpentaria, SW of Nassau River, 16°06'S 140°44'E, alive,  22 m(4 pr, C.110630); SE Gulfof Carpentaria, W of Gilbert River, 16°41'S 140°09'E,dead,  18.3 m(1 v, C.110624);  Gulfof Carpentaria, Forsyth Island, 16°50'S 139°06'E, dead,beach (2 v,C.014849);SE Gulfof Carpentaria, W of Point Burrowes, 16°57'S 140°16'E, alive,  18 m(2 v, C.346921; 1 pr, C.348457); SE Gulfof Carpentaria, W of Point Burrowes, 16°57'S 140°35'E, alive,  14.5 m(2 pr,C.346923); SE Gulfof Carpentaria, W of Point Burrowes, 16°58' S 140°0'E, dead,  18 m(1 v,C.111259);  Gulfof Carpentaria, S of Sweers Island, 17°06'S 139°37'E, dead,  9–22 m(1 v, C.346939);  Gulfof Carpentaria, 28 ml S of Sweers Island, 17°06' S 139°37'E,dead (9 v,C.346943); Torres Strait, Murray Island, 9°56'S 144°04'E, dead (1 pr, C.348278); Torres Strait, 10°11'S 141°48'E, dead,  13 m(2 pr, C.164906);  Torres Strait, 10°22' S 141°42' E, alive,  16 m(2 pr, C.164911);  Torres Strait, Thursday Island, 10°35'S 142°13'E, alive (12 v, C.097439; 3 pr, C.346960); Torres Strait, Friday Island, 10°36'S 142°10'E, dead (9 v,C.094502); Cape York Peninsula, 10°41'S 142°31'E,alive (2 pr, C.097435); Cape York, Telegraph Station, 10°42' S 142°28'E, dead, beach (3 v, C.036313); Cape York,near Telegraph Station, 10°42'S 142°28' E,dead (1 pr,C.103811); Cape York Peninsula, Somerset Bay, 10°44'S 142°35'E, alive (1 pr, C.348484); Cape York Peninsula, Albany Passage, 10°45'S 142°37'E, dead,  7–26 m(many v,C.036128);  Cape York Peninsula, Albany Passage, 10°45'S 142°37'E, alive (3 pr,C.131991); Cape York Peninsula, Albany Passage, 10°45' S 142°37' E, alive,  16–22 m(17 v, C.055697);  Cape York, Red Island Point, near Bamaga, 10°51' S 142°21'E, alive (1 pr, C.131997); Cairncross Island, 11°14' S 142°55'E,alive (6 pr,C.097441);2 ml NE of Hannibal Island, 11°33'S 142°57'E, dead,  22–23 m(1 pr, C.347792); GBR, Lizard Island, 14°40'S 145°28'E,dead (1 v,C.347793);off Bow Reef, near Cape Sidmouth, 13°20'S 143°40'E, dead,  19 m(1 v, C.002576); 5 ml WNW of Lizard Island, 14°30'S 145°22'E, dead,  20 m(1 pr, C.130385); 0.5 ml SE of Lizard Island, 14°41'S 145°29'E, dead,  35 m(1 v, C.153561);  Turtle Island, 14°44'S 145°12'E, dead,  14.5 m(1 v, C.347795); 0.25 ml N of North Direction Isle, 14°44'S 145°31' E, dead,  34.5 m(1 v, C.089667;1 v, C.094500); off Cape Flattery, Decapolis Reef, 14°50'S 145°17'E, dead,  12–14 m(1 v, C.347796); off Two Isles, 15°01'S 145°26'E, dead (2 v, C.161021); 0.5 ml W of Two Isles, 15°01'S 145°26'E, dead,  30 m(5 v, C.347794);  Cooktown, 15°28'S 145°15'E, dead (1 v, C.106987);off Cooktown, 15°28' S 145°23' E,alive (8 pr,C.097440); Cairns Reeflagoon & between Cairns Reef& Hope Island, 15°42'S 145°30'E,dead,  9–18 m(12 v,C.027531);  Penguin Channel, 16°15'S 145°31'E,alive,  18–28.5 m(1 pr,C.093400);  Penguin Channel, 16°15'S 145°31'E, dead,  22–25 m(8 v, C.094499);  Low Isles, 16°23' S 145°34'E, dead,  16–22 m(1 pr, C.075258; 6 v, C.093403);  Low Isles, 16°23'S 145°34'E, alive (1 pr, C.089668;24 v,C.119460);off Cairns, 16°51'S146°01'– 146°04'E,dead,  33–35 m(many v, C.347804; 12 v, C.348267); off Cairns,GBR, 16°52'– 16°53'S 146°06' E,dead,  37–38 m(5 v,C.348263);  Cairns Harbour, 16°53'S 145°48'E, dead (1 v,C.094498);off Cairns, GBR, 16°55'S 146°07'E, dead,  37–40 m(5 v, C.348265);  Magnetic Island, Horseshoe Bay, 17°07'S 146°51'E, dead,  6–9 m(1 v, C.348261);  Family Islands, Dunk Island, 17°57'S 146°10'E, dead (1 v, C.009983; 1 pr, C.047367); off Townsville, 18°40'S 146°55'E, dead,  40–41 m(2 v, C.348266); off Townsville, 6–7 ml E of Keeper Reef, 18°45'S 147°23'E,dead,  43 m(6 v, C.347812); off Ingham, 18°53'S 147°35'E, alive,  58 m(1 pr, C.337113); off Townsville, 19°0' S 147°0'E, alive,  45 m(1 pr, C.348268);  Magnetic Island, 19°08'S 146°50' E, dead (6 v, C.094496); Bohle Rivermouth, N of Townsville, 19°11'S 146°45'E, dead (1 v, C.068508); Townsville, Rowes Bay, 19°14'S 146°48'E, dead (1 v, C.107188); Townsville, Rowes Bay, 19°14'S 146°48'E, dead, intertidal (1 pr, C.131996); Townsville, 19°16'S 146°49'E, dead (3 v, C.094497; 2 pr, C.347809; 17 v, C.348428); S of Townsville, 19°17'S 147°32'E, dead,  24 m(7 v, C.348264); off Cape Upstart, 19°42' S 147°45'E,alive,  36 m(4 pr,C.097517); off Bowen, 19°44'S 148°14'E, dead,  40 m(1 v, C.119545); E of Bowen, 19°45'S 148°19'E, dead,  46 m(3 v, C.348269); W of Hayman Island, 20°03'S 148°50'E, dead,  33 m(22 v, C.348274);  Bowen, 20°04'S 148°22' E, dead (1 pr, C.348432); Sinclair Bay, Cape Gloucester, 20°07'S 148°27'E, alive (2 pr, C.097438); Edgecumbe Bay, Sinclair Bay, 20°07'S 148°27' E, dead (3 pr,C.348426); Edgecumbe Bay, Bowen, 20°08'S 148°23' E, dead (1 v, C.131993); Whitsunday Islands, Lindeman Island, 20°27' S 149°02'E, dead (many v, C.348270); off Shaw Island, N of Mackay, 20°29'S 149°05'E, dead,  37 m(1 v, C.348273); E of Mackay, 20°52'S 149°29'E, dead,  35 m(8 v, C.116558);  Seaforth, N of Mackay, 20°54'S 148°58'E, dead (1 v, C.059194); E of Sarina, 21°27' S 150°08'E, dead,  42 m(many v, C.119596); E of Sarina, 21°28'S 150°08'E, dead,  40 m(26 v, C.348275); GBR, Swain Reefs, 3 kmNE of W side of Bylund( Gillett) Cay, 21°42'S 152°26'E, dead,  64–73 m(many v, C.153560); SE of Sarina, 21°47'S 150°34' E, dead,  59 m(many v, C.116486); E of Broad Sound, 21°58'S 150°45' E, dead,  57 m(many v, C.347637); off Broad Sound, 22°06'S 150°49'E, dead,  53 m(many v, C.116496); SE of Swain Reefs, 22°31'S 152°32'E,dead,  100 m(many v,C.151489); off Yeppoon, 22°40'S 151°16' E, dead,  58 m(6 v, C.348280); off Yeppoon, 22°42' S 151°37'E, dead,  68 m(3 v,C.348281); 30 ml NE of Yeppoon, 22°50'S 151°11'E,alive,  46–55 m(12 pr,C.073249); NE of Rockhampton, 22°50'S 151°39'E, dead,  64 m(2 v, C.348279); off Yeppoon, off North Keppel Island, 23°02'S 151°10'E,alive,  51 m(5 pr,C.348491);  Keppel Bay, North Keppel Island, 23°04' S 150°54'E, dead (4 v, C.348430); North Keppel Island, close inshore to NW end,alive,  7 m(1 pr,C.348488);  Keppel Bay, Yeppoon, 23°08'S 150°45'E, alive (3 pr, C.131995; 1 pr, C.348282); 1.5 ml NW of South Keppel Island, 23°08'S 150°56'E, alive,  13–20 m(7 pr + 1 v, C.077056);  Keppel Bay, NE of South Keppel Island, between Outer Rock& Man& Wife, 23°08'S 150°56'E, dead,  24–26 m(2 v, C.348271);  Capricorn Channel, 23°08'S 152°16' E,dead,  155 m(2 v,C.348272);  Keppel Bay, 1.5 ml NW of South Keppel Island, 23°09'S 150°57'E, dead,  13–20 m(2 v, C.070801);  Capricorn Channel, 4 ml E of North Reef, 23°09'S 151°58'E, alive,  64 m(2 pr + 3 v, C.348277);  Capricorn Channel, off North Reef, 23°09' S 151°59'E, dead,  54 m(1 pr, C.348284);  Keppel Bay, off Humpy Island, 23°13' S 150°58'E, dead,  4 m(1 v, C.124011);  Capricorn Group, North West Island, 23°18'S 151°42' E,alive (7 v, C.057647; many v, C.131992; 2 v, C.161006); Capricorn Group, off North West Island, 23°18'S 151°42'E, alive,  36 m(4 v, C.348283);  Keppel Bay, 23°25' S 150°55'E, dead (1 v, C.131994); Capricorn Group, One Tree Island, 23°30'S 152°05' E, dead,  55 m(23 v, C.348276);  Gladstone Harbour, 23°51'S 151°16'E,dead (9 v,C.089474);S of Gladstone, Tannum Sands, 23°57' S 151°22'E, dead, beach (1 v, C.347625); Port Curtis, Rodds Harbour, 24°0'S 151°34'E,alive (1 pr, C.069989;1 pr,C.080062); Port Curtis, Hummock Hill Island, 24°01'S 151°28'E,alive (2 pr,C.062604);off Burnett Heads, 24°46'S 152°24'E, alive,  27 m(12 pr, C.097437);  Bargara, 24°49'S 152°28'E, dead (2 v, C.348429); S of Fraser Island, 25°28'S 153°0'E, alive (1 pr,C.070291); off S end Frazer Island, 25°48'S 153°46'E, dead,  73 m(1 v, C.347624); off Tin Can Bay, 25°50' S 153°27'E, alive (1 pr, C.062503); E of Caloundra, 26°48'S 153°35'E, dead,  91–119 m(4 pr, C.097445); near Moreton Bay, 27°13'S 153°20'E, alive (1 pr,C.081213); Moreton Bay, Redcliffe Beach, 27°14'S 153°07'E, alive (1 v, C.089483; 3 pr, C.147401); Moreton Bay, off Redcliffe Beach, 27°14'S 153°07'E, alive (1 pr,C.094494); Moreton Bay, 27°15'S 153°15'E,alive (3 pr, C.047362;2 pr, C.064544;1 pr + 1 v, C.077041); Moreton Bay, 27°15'S 153°15'E, alive,  3.5–11 m(7 v, C.094493);  Moreton Bay, Bramble Bay, Humpybong, 27°17'S 153°04' E,alive (1 pr,C.019174); Moreton Bay, Sandgate, Cabbage Tree Creek, 27°20' S 153°06'E, alive (2 pr, C.102906); Moreton Bay, Green Island, 27°26'S 153°14'E, dead (1 v, C.347635); Moreton Bay, off Peel Island, 27°30'S 153°21' E, alive,  9 m(many, C.097443; 5 pr, C.097444);  Moreton Bay, off Dunwich, Stradbroke Island, 27°30'S 153°24'E,alive,  5–7 m(7 v,C.075250;3 v,C.347633);  Moreton Bay, Dunwich, Stradbroke Island, 27°30'S 153°24' E, alive (1 pr, C.348478); Moreton Bay, Peel Island, 27°30'S 153°21'E, alive (3 pr, C.094495). NEW SOUTH WALES: Brunwsick Heads, 28°32'S 153°33'E, dead, beach (1 v, C.098628); off Coffs Harbour, 30°36'– 30°39'S153°19'– 153°18'E, dead,  165 m(1 v, C.123478);  Port Stephens, 32°42'S 152°05'E, alive (2 pr, C.012155). WESTERN AUSTRALIA: Shark Bay, South Passage, 26°10'S 113°13'E, dead (1 v, C.069374); Exmouth Gulf, SE of Exmouth Homestead, 22°24'S 114°08'E, alive (1 pr, C.348477); North West Shelf,  26 n.ml NNE of Dampier, 20°14'S116°50'– 116°50.6'E, alive,  40–41 m(2 pr + 4 v, C.346912);  North West Shelf, 50 n.ml NNE of Port Hedland, 19°30' 19°31'S118°52' – 118°49'E, dead,  38–40 m(4 v, C.149900);  North West Shelf, 52 n.ml NNE of Port Hedland,19°30' – 19°28.2'S118°49'– 118°55.4' E, dead,  36–37 m(5 pr + 5 v, C.149172;14 v,C.149202);  North West Shelf, 74 n.ml NNE of Port Hedland,19°05' – 19°05.3'S118°53'– 118°54'E, dead,  80 m(1 v, C.149987);  North West Shelf, 77 n.ml NNE of Port Hedland,19°05' – 19°04.9'S118°58'– 118°58.2' E, dead,  82 m(3 v, C.149916);  North West Shelf, 76 n.ml NNE of Port Hedland, 19°04'– 19°04.7' S118°50'– 118°50.8'E, dead,  81 m(4 v, C.148635; 2 v, C.148636);  North West Shelf, 78 n.ml NNE of Port Hedland, 19°04'– 19°04.3'S118°47'– 118°47.6'E, dead,  82 m(11 v, C.149222);  North West Shelf, 78 n.ml NNE of Port Hedland,19°04'– 19°04.2' S119°04'– 119°0.7'E,dead,  82 m(34 v,C.149316);  North West Shelf, 80 n.ml NNE of Port Hedland, 19°03'– 19°03.4' S119°03'– 119°03.5' E, dead,  82 m(4 v, C.346913);  North West Shelf, 94 n.ml NNE of Port Hedland, 18°48'S 119°0'E, dead,  92–94 m(2 v, C.346911); c. 80 ml NW of Broome, 17°20'S 121°11'E, dead,  95 m(1 v, C.160981).  NORTHERN TERRITORY: Arafura Sea, c. 110 ml N of Melville Island, 9°34'S 131°22'E,dead,  135 m(1 v,C.123870);  Arafura Sea, 10°13' S 133°58'E,alive,  72 m(3 pr,C.348486);  Arafura Sea, c. 45 ml N of Croker Island, 10°17'S 132°38'E, dead,  65 m(3 v,C.346918);  Arafura Sea,  91 kmN of Goulburn Island, 10°42' S 133°36' E,dead,  58 m(4 v,C.346937);  Darwin, Waigait, 11°28'S 130°50' E, alive (7 pr, C.348472); Darwin, Stokes Hill Powerhouse, 11°28'S 130°50' E, alive (15 pr, C.348475); off Darwin, 12°04'S 123°50' E, dead,  132 m(3 v, C.070519);  Arnhem Land, Gove Peninsula, Yirrkala, 12°15'S 136°53'E, dead (1 v, C.346919); Port Darwin, 12°28'S 130°50'E, dead (2 v, C.013918); Daly Rivermouth, 13°19'S 130°15'E, dead (1 pr, C.019478); Anson Bay, 13°20'S 130°10'E, dead (4 v, C.040801); Gulfof Carpentaria, Groote Eylandt, 14°0'S 136°25' E,dead (1 v,C.346920). — PAPUA NEW GUINEA: New Britain, Rabaul, 4°12'S 152°11'E,dead (1 v,C.348447); Gulfof Papua, off Cape Possession, 8°37'S 146°20'E, dead,  27 m(2 v, C.088004); SW Port Moresby, Lolorua Island, 9°30'S 147°06' E, dead,  13–18 m(5 v, C.348443);  Port Moresby, Manubada Island, 9°31'S 147°10'E, off W end,just inside of outer reef, alive,  18–22 m(many, C.348442);  Louisiade Archipelago, Nimoa Island, Calvados Chain& Rossel Island, 11°18'S153°15'– 154°0'E, dead (1 v, C.348444; 3 v, C.348446).— NEW CALEDONIA: Baaba Island, 20°03'S 163°58'E,W coast,alive,  0–0.5 m(1 pr,C.348466);  Poum Bay, Daomboui Island, 20°09'S 163°59'E, alive,  0–3 m(1 pr, C.348468);  Poum, 20°13'S 164°03'E, dead (1 pr, C.348438); Poum, Recif Bay, 20°13'S 164°03'E, alive,  1–4 m(1 pr,C.348469);  Nouméa, North Dumbea, Baie Papaya, 22°11'S 166°19'E,alive,  0–3 m(1 pr, C.348465);  Nouméa, Baie des Isoles, Magenta, Ouemo, 22°16'S 166°29' E, alive (2 pr,C.348691); Nouméa, Baie des Citrons, 22°18'S 166°26'E,dead (1 v,C.106418); Nouméa, Ile Ste. Marie, 22°18' S 166°29'E, alive,  0–2 m(3 v, C.348439; 10 pr + 3 v, C.348440; 1 pr, C.348461);  Anse Vata, Aquarium de Nouméa, 22°19'S 166°27'E, alive (many,C.348435;many,C.348436); Nouméa, Anse Vata, 22°31.7' S 166°45' E,alive,  1–3 m(1 pr, C.348458). TASMAN SEA: off Newcastle, Taupo Guyot, 33°06'S 156°09'E, dead,  154–164 m(5 v, C.139602).   Description. Shell rather compressed, up to c. 120 mmhigh, juvenile elongate, adult subcircular, equivalve, equilateral, left valve slightly more convex than right, auricles highly unequal, umbonal angle c. 80–85°; most specimens dark brick red with paler maculations. Both valves sculptured with 22–23 evenly spaced primary radial plicae bearing variably prominent, widely set scales, with secondary squamose interstitial riblets near ventral margin (absent in juveniles). Interstitial microsculpture of irregular antimarginal scratches, weakly developed on central part of disc, more prominent near posterior margin.Anterior auricle of left valve with c. 8 scaly radial riblets; of right valve with 5–6 more prominent riblets. Posterior auricle of left valve with similar sculpture to anterior, although weaker and with fewer riblets. Dorsal margin straight. Resilifer narrowly triangular. Byssal notch deep, byssal fasciole rather broad. Functional ctenolium well-developed, with c. 5 teeth. Interiorfurrowed; internal rib carinae short, prominent around ventral margin. Resilial and dorsal teeth prominent.  Dimensions. Illustrated specimens: N QLD, Port Curtis, Rodds Harbour (AM C.069989; scaly, coarsely sculptured specimen): rv: H 77.4, L 74.4 mm; lv: H 76.3, L 73.4 mm; D 26.0 mm; S QLD, trawled off Moreton Island (AM C.081213; weakly sculptured specimen): rv: H 86.6, L 79.3 mm; lv: H 85.7, L 78.7 mm; D 27.9 mm; holotypeof  Mimachlamys subgloriosaIredale, AM C.089668 (Fig. 93B, E), QLD, GBR, Low Isles, 16–22 m: H 43 mm, L 40 mm.  Habitat. Living in the littoral zone, byssally attached to rocks or coral, or amongst coral rubble on soft sediment (sand and/or mud). In Western Australiaoften attached to pipes or ropes in deeper water, occasionally found attached to ropes hanging under floats washed as far south as Perth (H. Morrison, pers. comm.).   Distribution. Tropical western Pacific, from the Philippinessouthwards to Indonesiaand northwestern, northern and northeastern Australia, eastwards to Tonga(Raines & Poppe, 2006: 272); PhilippinestoAustralia, 17–110 m(Huber, 2010: 211); Philippines, 10–30 m( Raines, 2010: 640; Dijkstra, 2013: 92); Vanuatu, 91–110 m(Dijkstra & Maestrati, 2012: 401). Maximum depth range of live-taken specimens is in the intertidal zone to  110 m.Present specimens from Australiaalive at 3.5– 72 m.   Remarks.  Mimachlamys gloriosaclosely resembles  Mimachlamys crassicostata(G. B. Sowerby II, 1842)from northern Chinese and Japanese waters.  Mimachlamys gloriosacan be distinguished from  M. crassicostataby its smaller size (  M. gloriosaup to c. 120 mmin height,  M. crassicostataup to c. 140 mm), its different sculpture (  M. gloriosac. 22 plicae with secondary riblets in late growth stage;  M. crassicostatac. 24 plicae lacking interplical secondary sculpture), and its colour (  M. crassicostatais more brightly coloured, resembling the colour of  M. spinicostata). The eggs and larval development of New Caledonian specimens of  M. gloriosawere described by Lefort (1992). [439,510,513,536] NHMUK Australia Herein Moreton Bay 171 284 1 holotype [282,498,688,713] NHMUK 171 284 3 syntype Australia Moreton Bay 171 284 1 syntype [358,429,748,771] NHMUK Indonesia Amboyna 171 284 NHMUK 20010210 1 Maluku Utara syntype [304,367,835,859] NHMUK Tonga Group 171 284 1 Tongatapu holotype [444,522,923,947] AM Australia 19 Low Isles 171 284 1 holotype Torres Strait & N Gulf & NE Gulf & E Gulf & Carpentaria, W Australia Murray Island 59 -15.883333 Gulf of Carpentaria 1284 140.7 Gulf of Carpentaria 171 284 1 Queensland [794,1249,511,529] 20 -15.883333 Nassau River 1284 141.03334 171 284 1 11 -15.883333 Carpentaria 1284 141.21666 171 284 1 Gulf 22 -16.1 Carpentaria 1283 140.73334 171 284 1 Gulf 18 -16.683332 Carpentaria 1281 140.15 171 284 1 Gulf Carpentaria 18 -16.95 Carpentaria 1280 140.26666 Forsyth Island 171 284 1 Gulf 15 -16.95 Carpentaria 1280 140.58333 171 284 1 Gulf 18 -16.966667 Carpentaria 1280 140.0 171 284 1 Gulf 16 -17.1 Carpentaria 1279 139.61667 171 284 1 Gulf Torres Strait Carpentaria 13 -10.183333 Murray Island 1298 141.8 Torres Strait 171 284 1 Gulf 16 -10.366667 Torres Strait 1298 141.7 171 284 1 Gulf Torres Strait 17 -10.75 Torres Strait 1297 142.61667 Thursday Island 171 284 1 Gulf Cape York Peninsula Cape York Peninsula 19 -10.75 Albany Passage 1297 142.61667 Albany Passage 171 284 1 Gulf Cape York 23 -11.55 Bamaga 1295 142.95 Red Island Point 171 284 1 Gulf Bow Reef 19 -13.333333 Cape Sidmouth 1291 143.66667 Lizard Island 171 284 1 Gulf 20 -14.5 Lizard Island 1288 145.36667 171 284 1 Gulf 35 -14.683333 Lizard Island 1287 145.48334 171 284 1 Gulf [882,1340,1087,1105] 15 -14.733334 Turtle Island 1287 145.2 171 284 1 Gulf 35 -14.733334 North Direction Isle 1287 145.51666 171 284 1 Gulf [792,1417,1130,1148] 13 -14.833333 Decapolis Reef 1286 145.28334 Cape Flattery 171 284 1 Gulf 30 -15.016666 Two Isles 1286 145.43333 171 284 1 Gulf Cairns Reef Cooktown 14 -15.7 Cairns Reef 1284 145.5 Cooktown 171 284 1 Gulf [792,1289,1236,1255] 23 -16.25 Penguin Channel 1282 145.51666 171 284 1 Gulf 24 -16.25 Penguin Channel 1282 145.51666 171 284 1 Gulf 19 -16.383333 Low Isles 1282 145.56667 171 284 1 Gulf 34 -16.85 Cairns 1280 146.06667 Low Isles 171 284 1 Gulf 38 -16.883333 Cairns 1280 146.1 171 284 1 Gulf 39 -16.916666 Cairns 1280 146.11667 Cairns Harbour 171 284 1 Gulf 8 -17.116667 Horseshoe Bay 1279 146.85 Magnetic Island 171 284 1 Gulf Family 41 -18.666666 Townsville 1274 146.91667 Island 171 284 1 Gulf 43 -18.75 Townsville 1274 147.38333 171 284 1 Gulf 58 -18.883333 Ingham 1273 147.58333 171 284 1 Gulf [952,1418,1471,1489] 45 -19.0 Townsville 1273 147.0 171 284 1 Gulf Magnetic Island 24 -19.283333 Townsville 1272 147.53334 Bohle River 171 284 1 Gulf [878,1336,1599,1617] 36 -19.7 Cape Upstart 1271 147.75 171 284 1 Gulf 40 -19.733334 Bowen 1271 148.23334 171 284 1 Gulf 46 -19.75 Bowen 1271 148.31667 171 284 1 Gulf 33 -20.05 Hayman Island 1269 148.83333 171 284 1 Gulf Bowen 37 -20.483334 Cape Gloucester 1268 149.08333 Sinclair Bay 171 284 1 Gulf [899,1346,1770,1788] 35 -20.866667 Mackay 1266 149.48334 171 284 1 Gulf 42 -21.45 Sarina 1264 150.13333 Seaforth 171 284 1 Gulf 40 -21.466667 Sarina 1264 150.13333 171 284 1 Gulf Swain Reefs 69 -21.7 Gillett 1262 152.43333 Bylund 171 284 1 Gulf 59 -21.783333 Sarina 1262 150.56667 171 284 1 Gulf 57 -21.966667 Broad Sound 1262 150.75 171 284 1 Gulf [880,1374,1898,1916] 53 -22.1 Broad Sound 1261 150.81667 171 284 1 Gulf 100 -22.516666 Swain Reefs 1259 152.53334 171 284 1 Gulf 58 -22.666666 Yeppoon 1259 151.26666 171 284 1 Gulf 68 -22.7 Yeppoon 1258 151.61667 171 284 1 Gulf [893,1419,1962,1980] 51 -22.833334 Yeppoon 1258 151.18333 171 284 1 Gulf [793,1294,1983,2001] 64 -22.833334 Rockhampton 1258 151.65 171 284 1 Gulf 51 -23.033333 North Keppel Island 1257 151.16667 Yeppoon 171 284 1 Gulf Keppel Bay 7 172 285 -23.066668 North Keppel Island 1257 150.9 North Keppel Island 171 284 1 Gulf 17 -23.133333 Yeppoon 1257 150.93333 Keppel Bay 172 285 1 Gulf Outer Rock & Man & Wife 25 -23.133333 Keppel Bay 1257 150.93333 172 285 1 Gulf [253,736,257,275] 155 -23.133333 Capricorn Channel 1257 152.26666 172 285 1 Gulf 17 -23.15 Keppel Bay 1257 150.95 172 285 1 Gulf 64 -23.15 Capricorn Channel 1257 151.96666 172 285 1 Gulf 54 -23.15 North Reef 1257 151.98334 Capricorn Channel 172 285 1 Gulf 4 -23.216667 Humpy Island 1256 150.96666 Keppel Bay 172 285 1 Gulf Capricorn Group Capricorn Group 36 -23.3 North West Island 1256 151.7 North West Island 172 285 1 Gulf Capricorn Group 55 -23.5 One Tree Island 1255 152.08333 Keppel Bay 172 285 1 Gulf Burnett Heads Gladstone Harbour 27 -24.766666 Rodds Harbour 1249 152.4 Port Curtis 172 285 1 Gulf 73 -25.8 Frazer Island 1245 153.76666 Bargara 172 285 1 Gulf 105 -26.8 Tin Can Bay 1240 153.58333 172 285 1 Gulf Moreton Bay 7 -27.25 Redcliffe Beach 1237 153.25 Moreton Bay 172 285 1 Gulf Moreton Bay 9 -27.5 Humpybong 1236 153.35 Bramble Bay 172 285 1 Gulf Moreton Bay 6 -27.5 Stradbroke Island 1236 153.4 Dunwich 172 285 1 Gulf Coffs Harbour Moreton Bay 165 -30.65 Stradbroke Island 1220 153.3 Dunwich 172 285 1 Gulf Exmouth Port Stephens -22.4 South Passage 1260 114.13333 Shark Bay 172 285 1 Gulf 41 -20.233334 Dampier 929 116.84333 172 285 26 Gulf 39 -19.516666 North West Shelf 1271 118.816666 172 285 50 Gulf 37 -19.47 North West Shelf 127 118.92333 172 285 52 Gulf 80 -19.088333 North West Shelf 879 118.9 172 285 74 Gulf 82 -19.081667 North West Shelf 127 118.97 172 285 77 Gulf 81 -19.078333 North West Shelf 127 118.846664 172 285 76 Gulf 82 -19.071667 North West Shelf 127 118.793335 172 285 78 Gulf 82 -19.07 North West Shelf 127 119.011665 172 285 78 Gulf 82 -19.056667 North West Shelf 127 119.058334 172 285 80 Gulf 93 -18.8 North West Shelf 1274 119.0 172 285 94 Gulf 95 -17.333334 Broome 1279 121.183334 172 285 1 Gulf 135 -9.566667 Arafura Sea 1299 131.36667 172 285 1 Gulf [301,731,1302,1321] 72 -10.216666 Arafura Sea 1298 133.96666 172 285 1 Gulf 65 -10.283334 Arafura Sea 1298 132.63333 172 285 1 Gulf 58 -10.7 Arafura Sea 1297 133.6 172 285 1 Gulf Darwin Darwin 132 -12.066667 Stokes Hill Powerhouse 1294 123.833336 Waigait 172 285 1 Gulf Papua New Guinea Arnhem Land 27 -8.616667 Yirrkala 1301 146.33333 Gove Peninsula 172 285 1 Gulf Papua New Guinea 16 -9.5 Lolorua Island 1299 147.1 172 285 1 National Capital Papua New Guinea 20 -9.516666 Manubada Island 1299 147.16667 172 285 1 National Capital New Caledonia Louisiade Archipelago 3 -20.05 Calvados Chain 1269 163.96666 Nimoa Island 172 285 1 [165,738,1644,1662] New Caledonia 2 -20.15 Daomboui Island 1268 163.98334 Poum Bay 172 285 1 New Caledonia Poum 3 -20.216667 Recif Bay 1268 164.05 Poum 172 285 1 New Caledonia Noumea 2 -22.183332 Baie Papaya 1261 166.31667 North Dumbea 172 285 1 Noumea New Caledonia Noumea 1 -22.3 Magenta 1260 166.48334 Baie des Isoles 172 285 1 Noumea New Caledonia Anse Vata 2 -22.528334 de Noumea 859 166.75 Aquarium de Noumea 172 285 1 New Caledonia 159 -33.1 Taupo Guyot 1207 156.15 Newcastle 172 285 1