Edwardsiidae with the column divisible into physa, scapus, scapulus and capitulum, though these regions may be slightly distinguished. Scapus with or without adherent material, without nemathybomes and tenaculi. Tentacles 10-18, the outer longer than the inner. A single, ventral siphonoglyph. Mesenteries as in Edwardsia. Retractors in comparison with those of other Edwardsiidae rather weak. Ciliated tracts may be discontinuous. Curious, ciliated, spherical bodies, nematosomes, containing nematocysts occur in the coelenteron, in which they swim about. Cnidom: spirocysts, basitrichs, microbasic p-mastigophors.
N. vectensis Stephenson 1935
Milne-Edwardsia polaris Carlgren 1921
Milne-Edwardsia nathorsti Carlgren 1921
N. pellucida Crowell 1946
Definitions and contained taxa are those of Oscar Carlgren as published in 1949 : Kungl Svenska Vetenskapsakadamiens Handlingar, Series 4, Volume 1, Number 1
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