Genus Amigdoscalpellum Zevina, 1978

Arcoscalpellum Hoek, 1907: 85 (part); Newman & Ross, 1971: 42 (part).

Amigdoscalpellum Zevina, 1978b: 1349; Foster, 1980: 527; Liu & Ren, 1985: 206; Liu & Ren, 2007: 251.

Diagnosis. Usually of small size, sexes separate, capitulum of female with 13 or 14 partially reduced plates; carinal latus umbo at middle of carinal angle, not protruding; i nframedian latus triangular or baculiform, narrow, umbo apical, occupying progressively less space between rostral and carinal latera during ontogeny, resulting in apex not reaching upper latus; caudal appendages absent or present with one to seven segments; intermediate segments of cirri III–IV without setae on posterior interarticular margins.

Type species. Scalpellum manum Zevina, 1973.

Composition. 22 species.

Distribution. Worldwide, excluding Arctic. Known depth range 110 to 6096 m.

Remarks. Young (2007: 59) argued that Zevina’s (1978b; 1981a) classification was not always based on robust, objective characters and considered that the genus Amigdoscalpellum is an artificial group in need of further revision.