202 



Records of the Indian Museum. [Vol. XXIV 



spaced and the seventh tooth, when present, is much smaller than 

 the rest and placed quite close to the apex. On the lower border 

 there are 2 or 3, nearly always 2 teeth/ which are large and placed 

 in advance of the middle of the rostrum. 



Supra-orbital, antennal and hepatic spines are present as in 

 P. agag. The eyes are large and depressed ; the cornea is wider 

 than the stalk and in freshly preserved specimens usually shows 

 two concentric rings of dark pigment. The ocular spot touches the 

 cornea. 



The basal segment of the antennular peduncle has a short 

 lateral process, not reaching the middle of the segment ; its ter- 

 minal spine is long, reaching the middle of the second segment, and 

 the margin between the base of this spine and the articulation is 



gently convex (text-fig. 

 52a). The two distal 

 segments are slender. 

 The free portion of the 

 stouter ramus of the 

 outer antennular flagel- 

 lum is very short ; the 

 fused portion consists 

 of 7 to 11 segments. 

 The total length of the 

 stouter ramus is con- 

 siderably less than that 

 of the peduncle. The 

 antennal scale (text-fig. 

 52^) is from 4-5 to 5 - 8 

 times as long as wide 

 and is proportionately 

 longest in large males. 

 The scale is very narrow 

 at the apex. The outer 

 margin is strongly con- 

 cave and terminates in 

 a spine which far out- 

 reaches the end of the lamella. 



The third maxilliped bears a small arthrobranch. The exopod 

 reaches the end of the antepenultimate segment, the latter bearing 

 one or two spines on its outer edge. The ultimate segment, ex- 

 cluding the terminal spine is about two-thirds as long as the 

 penultimate. 



The mero-carpal articulation of the first peraeopods reaches 

 the end of the second segment of the antennular peduncle in adult 

 males, not quite so far in females. The carpus in adults of both 

 sexes is from 1*2 to 1*3 times the length of the merus and about 

 i - 4 times the length of the chela (text-fig. 53a). The limb is stouter 

 than in P. agag ; in an adult male the carpus is 10 times as long as 



ou. 



Text-fig. 52. — Periclimeiies proximus, sp. now 



a. Part of antennular peduncle. 



b. Antennal scale. 



1 Of twenty-one specimens twenty have 2 ventral leelli and one has 3. 



