Halcampoididae with elongate body and with physa-like or somewhat flattened aboral end. Column indistinctly divisible into scapus and scapulus. Cuticle developed chiefly on the scapus which is provided with somewhat modified weak tenaculi more or less visible to the naked eye. No sphincter. Tentacles 14, their longitudinal muscles ectodermal. A single weak, ventral siphonoglyph without conchula. Mesenteries 14, six pairs + one couple; the individuals of the couple have their retractors faced towards the dorsal pairs of directives, wherefore there is seemingly a single pair of directives. All mesenteries perfect, their retractors strong, restricted to kidney-like. Parietal muscles well-developed. As a rule all mesenteries fertile. Ciliated tracts of the filaments may be discontinuous. Cnidom: spirocysts, basitrichs, microbasic p-mastigophors.
S. striatus R. Hertwig 1882
Peachia antarcticus Pfeffer 1889
Definitions and contained taxa are those of Oscar Carlgren as published in 1949 : Kungl Svenska Vetenskapsakadamiens Handlingar, Series 4, Volume 1, Number 1
Questions or Comments?