Syllis profunda Cognetti, 1955

Syllis variegata profunda Cognetti, 1955: 3, fig. 2b; 1957: 20, fig. 4b.

Syllis alternata non Moore, 1908. San Martín & Viéitez 1984: 153, figs 1, 2; Pascual & Núñez 1999: 81, fig. 4; San Martín 2003: 354, figs 192, 193; Çinar & Gambi 2005: 754; Çinar & Ergen 2003: 777–778, in partim; Aguado et al. 2008: 20.

Syllis profunda . Langeneck et al. 2018: 209, fig. 7.

Material examined. INFUECO stations: BC3 0611, 1 specimen 80 m depth.

Habitat. The species has been cited in the Canary Islands as endobiont of demosponges in shallow bottoms (Pascual & Núñez 1999), also it has been found as epibiont of the gorgonian Eunicella verrucosa and in rhizomes of Posidonia oceanica (San Martín 2003) .

Distribution. North Pacific Ocean, from Alaska to Panamá, Japan and Chuckchi Sea; Indonesia; Amphi-Atlantic and Mediterranean Sea (Aguado et al. 2008).