Column smooth, broader in the distal part than in the proximal, without spirocysts. Tentacles as in Boloceroides. Siphonoglyphs distinct, variable in number. Mesenteries more numerous distally than proximally. 6-8 perfect pairs of mesenteries, which usually are sterile, imperfect mesenteries fertile. Asexual reproduction from oral disc and tentacles. The species is able to swim by movements of the tentacles.
B. gopalayi Panikkar 1937
Definitions and contained taxa are those of Oscar Carlgren as published in 1949 : Kungl Svenska Vetenskapsakadamiens Handlingar, Series 4, Volume 1, Number 1
Electronic version made possible by NSF grant DEB95-21819 in the PEET program to D. G. Fautin.