518 



short setae; the claw is more than half the 6th segment in length. The 

 2nd segment of pereopods II has a straight or somewhat S-shaped ante- 

 rior margin and a bulged posterior one; the 5th segment is wider than 

 its length and its posterior distal angle is extended into a triangular lobe 

 that terminates in a stiff apical denticle and is distally denticulate; with 

 the chela closed the lobe reaches the end of the 6th segment; the 6th 

 segment is narrow, with almost parallel sides, its surface armed, like the 

 posterior distal part of the preceding segment, with short setae; the claw 

 is more than half the length of the 6th segment. The 2nd segment of pere- 

 opods III-IV is shorter than the total length of the 3rd-5th segments; the 



418 4th and 5th segments are approximately equal in length; the 6th segment 

 is much narrower and longer; ornamentation is poor, with only sparse 

 setae present on the posterior margin of the distal segments; the claw 

 is long, almost straight, and about half the preceding segment in length. 

 The 2nd segment of pereopods V has a spiniform process at the place of 

 articulation of the coxal plate, a straight or bulged anterior margin, and 

 a uniformly bulged posterior margin; the 4th and 5th segments are about 

 equal in size; the 6th segment is much narrower and almost twice as long 

 as the 5th; the claw is about 1/3 the 6th segment in length; the 4th-6th 

 segments have sparse short setae along the anterior margin. The 2nd 

 segment of pereopods VI is broadened and has a proximally strongly 

 bulged posterior margin that distally forms a small roundish lobe that 

 overhangs the 3rd segment but does not reach its end; the anterior mar- 

 gin of the 2nd segment is straight, sometimes distally denticulate; the 

 4th and 5 th segments are equal in length or the 5 th longer, and the 6th 

 segment is narrower and somewhat shorter; the distal segment are finely 



419 denticulate along the anterior margin, the denticles especially prominent 

 on the 4th segment; the claw is about half the length of the 6th segment. 

 The 2nd segment of pereopods VII is ovally broadened, about equal to 

 the total length of the remaining segments, its maximum width shifted to 

 the proximal most part, and the posterior margin has a roundish proximal 

 lobe that projects over the place of articulation of the leg; the 4th, 5th, 

 and 6th segments are approximately equal in length. 



The pleon is slightly shorter than the pereon but its somites are rela- 

 tively massive and high — almost twice as high as the somites of the pereon. 

 The epimeral plates are slightly stretched and pointed posteriorly. The 

 urosome is less than 1/4 (at times almost 1/5) the total body length. The 

 basipodite of uropods I has parallel margins and is approximately twice 

 longer than wide; the rami are equal in length; the endopodite is very 

 slightly broader than the exopodite. The basipodite of uropods II does not 

 reach the end of the basipodite of uropods I but terminates at the level of 

 articulation of uropods III, is distally broadened, and approximately twice 

 longer than its maximum width; the rami are longer than the basipodite. 



