The body is high, compact, and markedly curved dorsoventrally. All the somites of the body, the telson, the coxal plates, the 2nd segment of pereopods V and VI, and the basipodites of the uropods have a distinct sculpture in the form of longitudinal furrows or polygons. Pereopods I and II are short and weak. The 2nd segment of pereopods I is barely bulged distally and its anterior margin barely curved or straight; the 3rd-7th segments together are equal in length to the 2nd; the 4th and 5th segments are equal in length and the 4th is not broader than the 5th; the distal process of the 5th segment is shorter than half the 6th segment. The 2nd segment of pereopods II has a concave anterior margin and bulged posterior one; the 3rd-7th segments together are shorter than the 2nd; the 4th segment is broader than the 5th; the distal process of the 5th segment reaches the tip of the denticle on the posterior margin of the 6th segment. Coxal plate V is stretched into an acuminate spine directed backward and has a large pointed process on the inner side; the 2nd segment is 2.5 times longer than wide; the distal segments are 1.2-2.5 times the 2nd segment in length. The 2nd segment of pereopods VI has a rather deep notch in the anterior margin close to the base, the posterior margin is bulged, and the lateral fissure is crescent-shaped; the 5th segment is half the length of the 4th and has a similar distal process; the 6th segment is longer than half the 5th segment. Pereopods VII generally consist of a 2nd segment that is narrow, forwardly bent, and rounded at the tip; sometimes one-two rudimentary distal segments are present. The basipodite of uropods II is somewhat shorter than the rami. The endopodite of uropods III is fused with the basipodite. The telson is triangular, with a pointed tip, its margin either slightly concave or straight, and its length 1.5-2 times its width. In some individuals the telson may be indistinctly separated from the urosome. [Claus, 1879] |