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its width, the anterior margin slightly concave and distally with four-six 

 spinules; the 4th segment has a spinule in the posterior distal angle; the 

 5th segment bears 6-10 strong spines and is distally denticulate; the 6th 

 segment is shorter than in pereopods V, its length six-seven times more 

 than its width, and the anterior margin finely denticulate; the claw is 1/3 

 the length of the 6th segment. The anterior margin of the 2nd segment 

 of pereopods VII is almost straight, slightly projecting downward and 

 armed with a spinule; the posterior margin is uniformly convex, the 

 distal lobe stretched downward to the middle of the 4th segment and the 

 segment itself equal to the total length of the 3rd-5th segments and half 

 of the 6th; the anterior distal angle of the 3rd segment and distal angles 

 of the 4th segment bear one spinule each; the 5th and 7th segments 

 are equal in length, the 6th segment slightly longer; the 7th segment is 

 finger-shaped, with an uneven surface covered with fine villi. 



The length of the somites of the pleon increases from I to III; 

 somite III is the same length as the last two pereon somites together. 

 The urosome is equal in length to somite III of the pleon. Urosomite I 

 is barely shorter than the next (geminate) urosomite. The posterolat- 

 eral angles of the urosome do not project. The rami of the uropods are 

 shorter than the basipodite. The basipodite of uropods I broadens dis- 

 tally, its length approximately three times its maximum width, and the 

 distal half of its outer margin denticulate. The rami are equal in length; 

 the outer margin of the exopodite is proximally finely denticulate, the 

 denticles increase distally; the inner margin is finely denticulate almost 

 up to the apex where three-four large denticles are present subapically; 

 the outer margin and distal part of the inner margin of the endopodite 

 211 are uniformly denticulate, while the proximal 2/3 of the inner margin is 

 smooth. The basipodite of uropods II is smooth, shorter than in pair I; 

 the rami are equal in length; the exopodite distally bears large denticles 

 along both sides, while the proximal part of the inner margin is finely 

 denticulate; the endopodite is distally coarsely denticulate on both sides; 

 large denticles and groups of minute denticles alternate in the proximal 

 parts of its outer margin; the proximal part of the inner margin is smooth. 

 The rami of uropods I and II are 3/4 the length of the basipodites. Sex- 

 ual dimorphism appears in the structure of uropods III — in males the 

 endopodite is elongated while in females the rami are almost equal and 

 the basipodite is smooth, its length twice its width; the rami in females 

 are about 2/3 the length of the basipodite, the endopodite barely longer 

 than the exopodite and basally slightly broader; in males the endopodite 

 is 3/4-4/5 the length of the basipodite and highly broadened at the base. 

 The sides of the rami face each other; the inner margin of the endopodite 

 and the distal part of the outer margin of the exopodite are finely den- 

 ticulate (in males the outer margin of the exopodite is smooth but the 



