Halcuriidae with definite but sometimes small base. Body elongate, almost smooth, but often with batteries of nematocysts, not lobed in the distal part. Margin tentaculate or with a parapet. No sphincter. Tentacles up to about 70, arranged in cycles, typically 18 (10+8)+10+16+8+16. Longitudinal muscles of tentacles and radial muscles of oral disc ectodermal. A single siphonoglyph. Typical arrangement of mesenterial pairs 10 (6+4)+8+16. Macrocnemes 10 pairs, fertile, filamented and with strongly restricted, more or less reniform retractors. Microcnemes only in the upper part of the body, some of them perfect. Parietobasilar muscles rather well developed to fairly weak. Dioecious. Cnidom see the suborder.
H. pilatus Mc Murrich [sic] 1893
H. Carlgreni [sic] Mc Murrich [sic] 1901
H. endocoelactis Stephenson 1918
H. capensis Carlgren 1928
H. minimus Carlgren 1928
Definitions and contained taxa are those of Oscar Carlgren as published in 1949 : Kungl Svenska Vetenskapsakadamiens Handlingar, Series 4, Volume 1, Number 1