Fraser, 1941b : 85 Zygophylax crassitheca Rees & Vervoort, 1987 : 78 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, 1941 b Fraser 1941 [151,588,964,990] Hydrozoa Lafoeidae Lictorella GBIF Animalia Leptothecata 37 38 Cnidaria species crassitheca     Lictorella crassitheca  Fraser, 1941b: 85, pl. 18, figs. 12a, b.    Zygophylax crassitheca.—  Rees & Vervoort, 1987: 78.     Holotype. USNM 43456: USA, Maine,  31 m, five fragments and some detached hydrothecae of a single colony, in fair condition, without gonophores, labelled “ type”; ethanol.    Typelocality. USA: Gulf of Maine, 17 fm (  31 m) ( Fraser 1941b).  Current status.Valid, as  Zygophylax crassitheca( Fraser, 1941b).   Remarks.Material designated by Fraser (1941b)as the “ type” of  Lictorella crassithecaat the NMNH (USNM 43456) presently comprises five fragments of what we regard as parts of a single colony. No indication of specimen number was provided in the original description. Rees & Vervoort (1987)referred to the collection as the “ typeseries,” but the specimen count in the online database of the NMNH is stated to be “1.” Recorded therein as a syntype, the specimen is taken here to be the holotypeby monotypy (ICZN Art. 73.1.2). No other typematerial of the species is known to exist. Minimal collection data accompany the holotype. In addition to the record from the Gulf of Maine, Fraser (1941b)recorded this species from R/V AlbatrossSta. 2430, 42°58’30”N, 50°50’W, SE of Sable Island ( Nova Scotia, Canada), 179 fm ( 327 m), 23 June 1885. In being listed separately from the “ type”, however, the material is not considered part of the typeseries (ICZN Art. 72.4.6). That collection, from the upper slope near the southern tip of the Grand Banks of Newfoundland, was not found in the current online database of the NMNH. In describing  Lictorella crassitheca, no gonophores were observed by Fraser (1941b). Nematophores were said to be scarce and restricted to the polysiphonic hydrocaulus ( Fraser 1941b, 1944a, b). Now assigned the binomen  Zygophylax crassitheca, this species is currently recognized as valid ( Rees & Vervoort 1987; Cairns et al. 2002; WoRMS). 1915525927 USNM United States of America 31 Maine 37 38 USNM 43456 2 Maine holotype 1915525932 [199,937,1198,1223] United States of America 31 Maine 37 38 1 Maine holotype