Genus Ancistrosyllis McIntosh, 1878

?* Ancistrosyllis cingulata (Korschelt, 1893)

DISTRIBUTION: NA.

LITERATURE RECORDS: Korschelt 1893; Aleffi et al. 1988; Castelli 1991; Požar-Domac 1994.

REMARKS: Korschelt (1893) described the species Harpochaeta cingulata from the larval planktonic stage found in the bay of Trieste, placing it in the family Syllidae . Ehlers (1908) considered the genus Harpochaeta as being synonymous with Ancistrosyllis and Fauvel (1923a) provided a description of the species as A. cingulata, based on Korschelt's (1893) description and drawings. However, until a formal redescription is done, this species should be considered as a Pilargidae incertae sedis as it may belong to the genus Cabira . Although Korschelt (1893) clearly pictures a median antenna, which suggests an Ancistrosyllis (but not all Ancistrosyllis have a median antenna), the distinguishing features that separate Ancistrosyllis from Cabira (such as the degree of dorso-ventral body compression, a peristomium sharply divided from segment 1 in Cabira but not in Ancistrosyllis, and possibly the pharynx shape, being highly muscular and sometimes long and looped in Ancistrosyllis), may not have been fully developed in a planktonic juvenile. Besides Korschelt (1893) also illustrates four lobes in the hind brain, which raises further difficulties in identifying the genus, as the Cabira reportedly has 3 and Ancistrosyllis 5 lobes (C. Glasby, pers. comm.).

Ancistrosyllis groenlandica McIntosh, 1878

DISTRIBUTION: NA, CA, SA.

LITERATURE RECORDS: Zavodnik & Vidaković 1987; Požar-Domac 1994; Zahtila 1995, 1997; Crema et al. 2001; Cantone & Di Pietro 2002; Aleffi et al. 2003; Solis-Weiss et al. 2004, 2007; Castelli et al. 2008. NEW RECORDS: BM12, BM13, BM21, BM22, BM26, BM28, BM29, BM52, BM53, BM54, BM64, BM73, BM101.