182 



Records of the Indian Museum. 



[Voi,. XXIV, 



chela is at most twice the length of the merus ; the fingers are both 

 normal in form and are about two-thirds the length of the 

 palm. Type c (text-fig. 38c) 1 is closely similar to type b t but 

 the fingers are equal in length with the palm. The whole limb 

 is smaller and is frequently not so long as the first peraeopod. Type 

 d (text-fig. 38^) differs widely from any of the others ; it is shorter 

 than the first peraeopod and just as slender. The carpus is very 

 slender, more than 25 times as long as wide and the fingers are 

 twice or rather more than twice as long as the palm. On the 

 inner face of the chela in types b, c and d the fingers tend to be 

 hollowed out or spooned and this feature is particularly noticeable 

 in d. I give below, at the end of this description, some notes on 

 the different ways in which these four types of second peraeopod 

 are combined to form a pair. 



The last three pairs of peraeopods are rather slender ; the 



third pair (text-fig. 39c) 

 reaches to or a little 

 beyond the end of the 

 antennular peduncle. 

 The propodus bears 

 some fine setae, but ex- 

 cept for one, rarely two, 

 at its distal end the 

 posterior edge is devoid 

 ofspinules. The dacty- 

 lus is moderately stout, 

 simple and curved ; it is 

 from one-third to one- 

 fourth the length of the 

 propodus. 



The sixth abdominal 

 somite is about 17 

 times the length of the 

 fifth. The anterior of 

 the two pairs of dorsal 

 spinules of the telson is 

 situated a little behind 

 the middle of its length ; 

 the posterior pair is 

 midway between the anterior pair and the apex. 



Adult specimens do not exceed 11 mm. in length; those from 

 the Andamans are decidedly smaller than those from the Gulf of 

 Manaar. In life the species is transparent, sometimes with short 

 streaks of red pigment on the eyestalk, carapace, sides of abdomen 

 and pleopods. 



P. diversifies is closely related to Nobilis P. fiotina and 

 to P. inomatus, sp. nov. ; the differences are explained below 

 (pp. 184 and 194). 



C. 



Text-fig. 39. — Periclimenes diversipes, sp. nov. 



a. First peraeopod. 



b. Cutting edge of finger of first peraeopod, 



very greatly enlarged. 



c. Third peraeopod. 



1 The carpus is sometimes rather more slender than in this figure. 



