Genus Amphorina Quatrefages, 1844

Amphorina Quatrefages 1844: 145-146; Martynov 1998: 774.

Non Amphorina sensu Trinchese 1877-1879 and auctt. (mixture with Trinchesia spp.)

Type species.

Amphorina alberti Quatrefages, 1844

Diagnosis.

Ceratal rows non branched. Up to six anterior ceratal rows (commonly no more than four). Cerata without tubercles, usually considerably swollen. Rhinophores smooth. Pharynx and jaws moderately broad. Central teeth with central cusp adpressed by adjacent lateral denticles. Prostate thick, readily distinct from vas deferens, from moderate in length to very long. Distal receptaculum seminis oval to elongate on a moderately long stalk. Supplementary gland inserts to penis commonly via a narrowed stalk. Penis conical, always with a relatively short, slightly curved, hollow stylet.

Species composition. In this study, we confirmed that Amphorina currently includes five species: A. andra sp. nov., A. farrani (Alder & Hancock, 1844), A. linensis (Garcia-Gomez, Cervera & Garcia, 1990), A. pallida (Alder & Hancock, 1842), A. viriola sp. nov.