1922.] S. Kemp : Notes on Crustacea Decapoda. 221 



carapace, but is not widely separated from the next, which is either 

 above or a little behind the posterior limit of the orbit. In most 

 specimens the upper teeth are arranged in two groups, the five 

 proximal teeth being separated by a marked interval from the four 

 or five distal, with or without a single isolated tooth between the two. 

 On the lower border in the anterior two-thirds there are from 6 to 9 

 teeth (usually 7 or 8), 1 extending close up to the apex. 



The carapace is obtusely angled at the lower limit of the 

 orbit. The antennal spine is strong and is flanked by a short 

 carina ; the hepatic is behind it, but on a lower level. There is 

 no supra-orbital spine. 



The eyes are large and somewhat depressed, with the cornea 

 wider than the stalk. The ocular spot touches the cornea. 



The basal segment of the antennular peduncle bears a short 

 lateral process ; the outer margin terminates in a sharp spine 

 which do?s not reach the middle of the next segment. The second 

 and third segments are slender, but the whole peduncle is not long, 

 scarcely reaching beyond the middle of the antennal scale. The 

 free portion of the shorter ramus of the outer antennular flagel- 

 lum is extremely short ; the fused part is longer than the peduncle 

 and is composed of some 12 to 15 segments. The antennal scale 

 in full grown specimens is from 6 - 5 to 7 times as long as wide and 

 is very narrow distally. The outer margin is strongly concave 

 and the terminal spine projects far beyond the apex of the lamella. 



The third maxillipeds do not reach the end of the antennular 

 segment ; the ultimate segment is about two-thirds the length of 

 the antepenultimate. 



The mero-carpal articulation of the first peraeopods reaches 

 the end of the antennular peduncle. The carpus is about 1*5 times 

 the length of the merus, and is from 2 to 275 times as long as the 

 chela. The fingers are a little longer than the palm and are un- 

 armed. 



The second peraeopods in males may outreach the rostrum by 

 the whole of the chela and carpus and a portion of the merus, 

 they are from 55 to 7-5 times as long as the carapace. The legs 

 forming a pair are, as a rule, equal and similar in structure. There 

 is a strong spine at the distal end of the merus on the lower side. 

 In the largest male the merus is about 6*5 times as long as wide. 

 The carpus is 1*4 times as long as the merus; it is slender at the 

 base but is suddenly dilated in its distal third, the length being 

 about 7 - 5 times the distal breadth. On the inner side of the car- 

 pus at the distal end there is a small obscure tooth, much as in 

 Periclimenes agag. The chela is about 1*25 times the length of the 

 carpus ; the palm is 5 times as long as broad and about 1*9 times 

 the length of the fingers. In smaller males the limbs are more 

 slender, with the carpus much less dilated at the distal end. In 

 one such male the merus is 8 times as long as broad and the carpus 



' Of thirty-two specimens four have 6 ventral teeth, sixteen have 7, eleven 

 have 8 and one has 9. 



