Propeamussium meridionale (Smith, 1885)

Dijkstra, Henk H. & Maestrati, Philippe, 2008, New species and new records of deep-water Pectinoidea (Bivalvia: Propeamussiidae, Entoliidae and Pectinidae) from the South Pacific, Mémoires du Muséum national d'Histoire naturelle 196, pp. 77-114 : 83

Propeamussium meridionale (Smith, 1885)

Amussium meridionale Smith, 1885: 316 , pl. 24, figs 1-1a.

MATERIAL EXAMINED. — The type material (see Dijkstra 1995: 178 ˚55’W, 353 m, 1 rv; stn DW 1485, 19˚03’S, 178˚30’W, 700- 19). 707 m, 1 spm, 1 lv, 2 rv.

Norfolk Ridge. NORFOLK 1: stn DW 1665, 23°43’S, 167°43’E, Tonga. BORDAU 2: stn DW 1531, 21˚12’S, 174˚56’W, 970- 923 m, 1 lv, 4 rv. 983 m, 3 lv, 10 rv; stn DW 1588, 18˚40’S, 173˚52’W, 630-710

Fiji. MUSORSTOM 10: stn CP 1342, 16˚46’S, 177˚40’E, m, 1 lv; stn DW 1597, 20˚40’S, 174˚55’W, 598-610 m, 8 lv, 6 rv; 650-701 m, 41 spm, 6 lv, 6 rv . — BORDAU 1: stn DW 1414, stn DW 1599, 20˚44’S, 174˚52’W, 720-760 m, 9 lv, 12 rv; stn 16˚31’S, 178˚59’W, 630-689 m, 3 lv, 8 rv; stn CP 1415, 16˚31’S, DW 1601, 20˚50’S, 174˚57’W, 200-487 m, 2 rv; stn DW 1602, 179˚00’W, 670-682 m, 1 spm, 14 lv, 16 rv; stn DW 1417, 16˚27’S, 20˚49’S, 174˚57’W, 263-320 m, 1 lv, 1 rv.

DISTRIBUTION. — East of Marion Island, south of Western Australia, Zanzibar area, Gulf of Aden, northern Arabian Sea, Maldive Islands, Indonesia, Chesterfield Islands, New Caledonia, Loyalty Islands and west of Patagonia ( Dijkstra 1995: 19), Wallis and Futuna and Vanuatu ( Dijkstra 2001: 78); live in 649-4810 m. New records for Fiji, Tonga and Norfolk Ridge. Present material live in 682- 700 m.

REMARKS. — The present material is more circular in shape than the type specimens (which are more posteriorly oblique) and whitish opaque (type specimens more transparent). The reticulated sculpture on the left valve of the present material is more prominent than on the type specimens (very weak or absent commarginal sculpture on the types). The marginal apron of both valves is damaged in much of the present material.