Haliactiidae with elongate body not divisible into regions. Proximal end physa-like. Column smooth, with rows of cinclides in its upper part. Sphincter absent. Tentacles long, the inner longer than the outer ones. Oral disc not divided into lobes. Mesenteries divisible into macro-and microcnemes, more numerous distally than proximally. 6 pairs of macrocnemes, microcnemes in variable number. Retractors of the macrocnemes restricted to circumscribed. Parietal muscles weak. Acontia few, only on the older macrocnemes, with basitrichs and probably microbasic amastigophors (penicilli).
P. gangeticus Annandale 1915
Definitions and contained taxa are those of Oscar Carlgren as published in 1949 : Kungl Svenska Vetenskapsakadamiens Handlingar, Series 4, Volume 1, Number 1