Jäderholm, 1903 : 290
Fraser, 1940a : 579
Synthecium crassum
Vervoort & Watson, 2003 : 246
Names of hydroids (Cnidaria, Hydrozoa) established by Charles McLean Fraser (1872 - 1946), excluding those from Allan Hancock Expeditions
Calder, Dale R.
Choong, Henry H. C.
Zootaxa
2018
2018-10-02
4487
1
1
83
Fraser, 1940 a
Fraser
1940
[267,519,1278,1304]
Hydrozoa
Lafoeidae
Cryptolaria
GBIF
Animalia
Leptothecata
42
43
Cnidaria
species
crassa
Synthecium protectum Jäderholm, 1903: 290, pl. 13, figs. 5, 6. Diphasia crassa Fraser, 1940a: 579, pl. 33, figs. 8a, b. Synthecium crassum.— Vervoort & Watson, 2003: 246.
Holotype. USNM 43440: Chile, Reina Adelaida Archipelago, Strait of Magellan, west mouth of straits, R/ V AlbatrossSta.2782, 51°12’S, 74°13’30”W, 472 m, 0 6 February 1888, small beam trawl, one colony, 2.5 cm high, in rather poor condition, without gonophores, labelled “ type”; ethanol. Typelocality. Chile: southwest coast, 51°12’S, 74°13’30”W, 472 m( Fraser 1940a). Current status.Invalid.
Remarks.The only known name-bearing typematerial of Diphasia crassa, fixed originally by Fraser (1940a)as the “ type” and constituting a single colony, is justifiably listed as a holotypein collections at the NMNH (USNM 43440). No specimens assigned to the species exist in the Fraser Hydroid Collection at the RBCM. The coordinates of the station are imprecise as they reflect a location on an island. Fraser (1940a)referred this species, with question, to DiphasiaL. Agassiz, 1862. Poorly known and described from infertile material, it was listed under SyntheciumAllman, 1872by Vervoort & Watson (2003). Following the suggestion of Horia R. Galea (personal communication, 31 March 2016), D. crassais regarded here as a synonym of Synthecium protectum Jäderholm, 1903( typelocality: Cape Valentine, Elephant Island). Of particular note, a distinctive unpaired hydrotheca may occur at the proximal end of each hydrocladium in both D. crassaand S. protectum. Jäderholm (1903)also reported that hydrothecae of S. protectumare partially covered by a flange of the adjoining internode.
1915525969
1888-02-06
USNM
V Albatross Sta.
Chile
472
-51.2
Strait of Magellan
925
-74.225
42
43
USNM 43440
2
holotype
1915525988
[199,1140,1578,1603]
Chile
472
-51.2
Chile
925
-74.225
42
43
1
holotype