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The head is equal in length to the first three somites of the pereon 

 and is more rounded in females than in males, in which the height of 

 the head exceeds its length. The eyes in females and young crustaceans 

 are brown but in qj>ales almost black. Antennae I in females are equal to 

 the head in length; the 1st segment of the flagellum is 2.5 times longer 

 than the base, tapers gently, and distally bears two distinct rudimentary 

 segments. Antennae II in females are shorter than antennae I and six- 

 to seven-segmented. Males are distinguished by the highly stretched end 

 of antennae I whose length is equal to the head and first two somites of 

 the pereon; the constricted distal part of the 1st segment of the flagel- 

 lum is equal in length to the highly broadened proximal part. Antennae 

 II in males are longer than antennae I, with highly elongated 4th-5th 

 segments. 



The 2nd segment of pereopods I is barely broadened and slightly 

 shorter than the rest of the leg; the 5th-6th segments are elongated, the 

 5th somewhat broader than the 6th; the claw is strong and half the length 

 of the 6th segment; the posterior margin of the 5th-6th segments and the 

 claw are denticulate. The 2nd segment of pereopods II is linear and 

 distinctly longer than the rest of the leg; the 4th segment has a well- 

 developed lobe supporting the chela; the chela weak: process of the 5th 

 segment does not extend to the middle of the 6th segment, and has an 

 uneven inner margin; the 6th segment is shorter and narrower than the 

 5th; the claw has a broad base and, like the two preceding segments, is 

 denticulate posteriorly. The 2nd segment of pereopods III-IV has paral- 

 lel margins and is twice longer than wide; the 4th segment is broadened 

 distally; the 5th segment is slightly narrower and shorter than the 4th; 

 the 4th-5th segments of pereopods III are 1.5 times, of pereopods FV 

 twice longer than wide; the 6th segment is narrower than the 5th and 

 about equal to the 4th, and three-four times longer than wide; the claw 

 has a broad base and is half the length of the 6th segment. Pereopods 

 V-VI are almost equal in length, much longer than pereopods III-IV, 

 and have long thin distal segments; the 2nd segment is broadened, has 

 faintly convex margins, bears several spinules in the distal part of the 

 anterior margin, and leans on the base of the 3rd segment. The 2nd seg- 

 ment in pereopods Vis 1.5 times longer, of pereopods VI twice longer 

 than wide; the 5th segment is longer than the 4th; the 6th segment is 

 about twice longer than the 5th and slightly curved. However, if the 2nd 

 segment in pereopods VI is longer than in pereopods V, then the 4th-5th 

 segments are concomitantly shorter, the 6th segment 10-12 times longer 

 than wide, and the claws 1/8-1/7 the length of these segments. Pereopods 

 VII barely extend to the middle of the 4th segment of pereopods VI; the 

 highly broadened 2nd segment is longer than the rest of the leg, almost 

 perfectly oval, armed with spines anteriorly, about 1.7 times longer than 



