Antennularia verticillata Fraser, 1925

Antennularia verticillata Fraser, 1925: 171, fig. 6.

Nemertesia verticillata .— Cairns et al. 1991: 28.

Holotype. CAS-IZ 21803.00: USA, Oregon, 31.7 miles (51 km) N 75° E of Heceta Head Light, U.S. F.C. Str. Albatross, 84 fm (154 m), 29 April 1914; 10% formalin.

Type locality. USA, Oregon: 31.7 miles (51 km) N 75° E of Heceta Head Light, 154 m (Fraser 1925).

Current status. Valid, as Nemertesia verticillata (Fraser, 1925) .

Remarks. Although material at the CAS (CAS-IZ 21 803.00) is listed as a syntype, Fraser (1925) described Antennularia verticillata from a “…fragment of a stem...”. No other type material is known to exist, and the specimen is taken to be the holotype by monotypy. Arai (1977) did not include any record of this species in the Fraser Hydroid Collection at the RBCM.

Antennularia verticillata was described from a colony fragment, reaching 25 mm high, with a strongly canaliculated hydrocaulus. Gonophores were lacking. Ramil & Vervoort (2006) reviewed the characters of this and other species currently included in Nemertesia Lamouroux, 1812 . The species is currently listed as valid, under the binomen N. verticillata, in both Cairns et al. (2002) and WoRMS.