Body smooth, slender, with the lateral processes scarcely longer than the segments are broad; very closely approximating Callipallene brevirostris , but with a more slender body. Cephalon as long as one and a half time all others segments together, with the neck extremely slim and prolonged and frontal part greatly swollen. The two last segments of the trunk coalescent. Abdomen very small, obtusely conic, directed upwards.
Ocular tubercle located at about the middle of the length of the body, exceedingly protuberant and conical acuminated. Proboscis long, about half the size of the cephalon, anteriorly directed, slightly wider anteriorly; oral orifice plain. Chelifores short, hand the length of the scape; fingers shorter than the palm. Palps absent.
Ovigerous legs in female the length of the body, in male as long, last segment with nine lamellar spines; without any claw.
Ambulatory legs about three and a half times the length of the body; 2nd coxa more than twice as long as the two other together; femur equal in length to tibia 2, tibia 1 considerably shorter; propodus somewhat curved, with five strong spines in the basal part of the inner margin; auxiliary claws nearly as long as the terminal claw.
Animal translucent, without any pigmentation. Length of the body up to 2 mm; the extent between the points of the ambulatory legs reaching 18 mm.
Sublittoral and occasionally in the littoral.
From Norway to the Mediterranean, Black Sea, the Azores and Florida.