Cirrophorus branchiatus Ehlers, 1908

Cirrophorus branchiatus Ehlers, 1908: 124 –126, pl. 17, figs 5–9; Day 1973: 93, fig. 13c; Imajima 1973: 274 –275, fig. 11; Strelzov 1973: 108 –111, fig. 46; Hartley 1981: 145; Gaston 1984: 2.6, figs. 2.2; Aguirrezabalaga & Gil 2009: 639 –640, fig. 6.

Aricidea (Cirrophorus) branchiata .— Hartman 1957: 323.

Material examined. 2785 Snøhvit SE–07; 71.5927°N–21.1702°E; 342 m; 11.06.2003; one specimen. 2785 Snøhvit SE–09; 71.5988°N–21.1754°E; 343 m; 10.06.2003; one specimen. 4000 Nucula N–05; 71.5504°N– 25.2452°E; 298 m; 23.06.2007 5–3; one specimen.

Diagnosis. Antenna frequently absent, papilliform and minute when present; secondary ciliary organs absent. Four prebranchial segments. Branchiae numbering up to 25 pairs; branchiae ciliated, conical with bluntly rounded tips. Modified notochaetae forked in anterior chaetigers, then acicular and with a subdistal spine.

Distribution. Eastern Atlantic from Celtic Sea (Hartley 1981) to Portugal (Gil & Sardà 1999). Arctic, from the Barents Sea to the Chukchi Sea (Strelzov 1973). Western Atlantic from North Carolina (Day 1973) to Gulf of Mexico (Gaston 1984). Mediterranean (Laubier & Ramos 1974). Pacific: Japan (Imajima 1973), eastern coast from western Canada (Blake 1996) to Baja California (de León-González et al. 2006). South Africa (Day 1967).