Haloclavidae with elongate body and rounded proximal end. Column indistinctly divisible into regions, in its upper part with 20 longitudinal rows of ampullaceous papillae. No sphincter. Tentacles 20 hemispherically swollen at the apex forming strong nematocyst batteries, acrospheres. Inner tentacles shorter than the outer ones. A single well-developed, ventral siphonoglyph without conchula. 10 pairs of mesenteries (6 pairs of the first cycle and 4 of the second, in the lateral and ventrolateral exocoels) all perfect and fertile. Retractors strong, more or less reniform. Parietal muscles well developed. Cnidom: basitrichs and traces of spirocysts.
Actinia producta Stimpson 1856
H. chinensis Carlgren 1931
Halocampa capensis Verrill 1865
Edwardsia brevicornis Stimpson 1855
Halocampa [sic] Stimpsoni [sic] Verrill 1868
Halcampella minuta Wasilieff [sic] 1908
Definitions and contained taxa are those of Oscar Carlgren
as published in 1949 : Kungl Svenska Vetenskapsakadamiens Handlingar, Series
4, Volume 1, Number 1