260 



broadened at the base and denticulate posteriorly. Pereopods I like pere- 

 opods II might serve functionally as catching and grasping legs. The 

 2nd segment of pereopods II is longer than the rest of the leg, highly 

 broadened (width 2/3 the length), with one-two spinules in the posterior 

 distal angle; the lobe of the 4th segment is long, 3-3.5 times longer than 

 the basal part of the segment and armed posteriorly and distally with 

 spines; the 5th segment is equal to the 4th but wedge-shaped, its maxi- 

 mum width half its length, and its process hardly extends to the middle 

 of the 6th segment; the distal margin of the 5th segment and both mar- 

 gins of the process are denticulate; the 6th segment is half the length of 

 the 5th, with denticulate posterior and distal margins; the claw is strong, 

 half the length of the 6th segment, and denticulate posteriorly. The 2nd 

 segment of pereopods III is equal to the 4th-5th segments together, its 

 length twice its maximum width, and the posterior margin more convex 

 than the anterior; the 4th segment is equal to the 5th; the 6th segment is 

 1 .5 times longer, weakly curved, its length about six times its width; the 

 claw is smooth, slightly curved, and 1/4 the length of the 6th segment; 

 the distal part of the 5th-6th segments is finely denticulate. Pereopods IV 

 are similar to pair III but the segments are slightly longer. The margins 

 of the 2nd segment of pereopods V are weakly convex, the length twice 

 the width and equal to the length of the 6th segment, and slightly less 

 than the total length of the 4th-5th segments; the 4th segment is slightly 

 shorter than the 5th; the 6th segment is slightly curved and finely dentic- 

 ulate anteriorly, its length almost ten times its width; the claw is smooth, 

 weakly curved, and about 1/5 the length of the 6th segment. Pereopods 

 VI are similar to pereopods V but the 2nd and 5th segments are broader; 

 the distal part of the anterior margin of the 2nd segment bears several 

 spinules and the distal margin is the largest; the anterior margin of the 5th 

 segment is armed with 8-10 strong short spines, while a few somewhat 

 weaker spines occur in the distal half of the 4th segment. The 2nd seg- 

 ment of pereopods VII is 1/3 the length of the rest of the leg and equal 

 in length to the 3rd-5th segments together, broadly oval, its maximum 

 width barely less than its length; the distal lobe of the posterior margin 

 is broadly rounded and 1/3 the size of the 4th segment; the distal part 

 of the anterior margin of the segment bears several minute spinules; the 

 distal angles of the 6th segment protrude laterally from the narrow base 

 of the 7th segment; the anterior distal angles of the 2nd-5th segment are 

 armed with minute denticles; the clavate 7th segment has a squamose 

 pattern on the surface. 



The pleon is equal in length to the last four somites of the pereon. 

 The urosome is the same length as somites II-III of the pleon; the gem- 

 inate urosomite is equal in length to the last somite of the pleon while 

 urosomite I is 1.7 into it; lateral notches divide the last urosomite almost 



