Genus Catherinum Zevina, 1978

Acroscalpellum Hoek, 1907: 85. - Newman and Ross 1971: 42 (part). - Liu and Ren 1985: 202.

Catherinum Zevina, 1978b: 1348.

Diagnosis.

Capitulum with 13 or 14 plates; inframedian latus very narrow, bacilliform, umbo sub-medial; umbo of upper latus apical or sub-apical; carinal latus broad, umbo sub-basicarinal, not extending beyond carinal margin; caudal appendages long.

Type species.

Scalpellum recurvitergum Gruvel, 1902; type locality: Atlantic Ocean, SW of Azores.