Halicornaria sinuosa Fraser, 1925

Calder, Dale R. & Choong, Henry H. C., 2018, Names of hydroids (Cnidaria, Hydrozoa) established by Charles McLean Fraser (1872 - 1946), excluding those from Allan Hancock Expeditions, Zootaxa 4487 (1), pp. 1-83 : 63

Halicornaria sinuosa Fraser, 1925

Halicornaria sinuosa Fraser, 1925: 171 , figs. 7Α–C.

Gymnangium sinuosum .— Vervoort, 1968: 114.

Syntypes. CAS-IZ 0 21 804.00: USA, Florida, USS Fish Hawk Sta. 7511, Gulf Stream off Cape Florida, 2 1/ 8 miles (3.4 km) SSE of Fowey Rocks Lighthouse, 45 fm (82 m), 25 May 1903, labelled “ syntype ”; 10% formalin.

BCPM 976-00861-001: USA, Florida, Gulf Stream off Cape Florida, 45 fm (82 m), several colony fragments, up to 5.9 cm high, in fair condition, without gonophores, labelled "co-type”; 60% IPA.

BCPM 976-00861-002: USA, Florida, Gulf Stream off Cape Florida, 45 fm (82 m), one colony fragment, 1.5 cm high, in good condition, without gonophores; slide.

Lectotype, by present designation. BCPM 976-00861-002: USA, Florida, Gulf Stream off Cape Florida, 45 fm (82 m), one colony fragment, 1.5 cm high, in good condition, without gonophores; slide.

Paralectotypes. CAS-IZ 0 21804.00: USA, Florida, USS Fish hawk Sta. 7511, Gulf Stream off Cape Florida, 2 1/ 8 miles (3.4 km) SSE of “Fovey Rock Light” (=Fowey Rocks Light), 45 fm (82 m), 25 May 1903, numerous colony fragments, in poor condition, with Aglaophenia rigida (= A. trifida Agassiz, 1862 ), labelled “ syntype ”; 10% formalin.

BCPM 976-00861-001: USA, Florida, Gulf Stream off Cape Florida, 45 fm (82 m), several colony fragments, up to 5.9 cm high, in fair condition, without gonophores, labelled "co-type”; 60% IPA.

Type locality. USA, Florida: Gulf Stream off Cape Florida, 2 1/ 8 miles (3.4 km) SSE of Fowey Rock Light, 45 fm (82 m) ( Fraser 1925).

Current status. Valid, as Gymnangium sinuosum ( Fraser, 1925) .

Remarks. In describing Halicornaria sinuosa , no name-bearing type was fixed by Fraser (1925). However, syntype material of Halicornaria sinuosa was located at both the CAS (CAS-IZ 0 21804.00) and the RBCM (BCPM 976-00861-001, BCPM 976-00861-002). The material at CAS is fragmentary and in poor condition. We therefore designate the best available syntype material as the lectotype (BCPM 976-00861-002).

The species, now assigned to genus Gymnangium Hincks 1874 as G. sinuosum , is regarded as valid ( Cairns et al. 2002; Calder & Cairns 2009; WoRMS). The synonymy of this species has been listed elsewhere, along with redescriptions, additional illustrations, and taxonomic remarks ( Bogle 1975; Calder 1997; Ansín Agís et al. 2001).