Diagnosis
Shape of carapace is variable but is generally elongate. The rostrum and incisure are well developed. Some species are highly ornamented with sculpturing and spines. The first antenna is curved and consists of seven podomeres, the first four of which lack any setae. The fifth segment ventrally carries a pad, which bears large numbers of long fine setae; this is a distinguishing character for the subfamily. The seventh segment terminates with four setae, the dorsal-most is plumose and shorter than the other three. There is no sexual domorphism of this limb. The endopodite of the second antenna has a characteristically elongate first segment. In males there is a well-developed hook appendage on the second segment which has up to three long seta inserted close to where the hook is angled. Some of the segments of the fifth and sixth limbs carry very long setae on their dorsal surface. Generally the caudal furca has 8 pairs of claw spines.
Remark
This subfamily consists of two genera, Bathyconchoecia and Euconchoecia.