Genus Bichoristes McLean, 1992

Type species

Bichoristes wareni McLean, 1992 (original designation), Recent, Norfolk Ridge.

Remarks

Bichoristes is a monotypic genus and is the only choristellid in which the shell is planispiral rather than helically coiled. However, the jaw and radula closely resemble those of other choristellid genera (McLean 1992) and thus like them, B. wareni is assumed to live within spent elasmobranch egg cases and to feed on decomposing bacteria growing on the inner egg case wall.