150 Records of the Indian Museum. [Voi,. XXIV, 



1899. Periclimenes parvus, Borradaile, in Willey's Zool. Results, 

 p. 407, pi. xxxvi, fig. 3. 



New Britain. 



Periclimenes (Periclimenes) incertus, Borradaile. 



1915. Periclimenes (Cristiger) incertus, Borradaile, Ann. Mag. Nat. 



Hist. (8), XV, p. 210. 

 191 7. Periclimeves (Cristige?) incertus Borradaile, Trans. Linn. Soc. 



(2) Zool. XVII, p. 364, pi. liii, fig. 7. 



I have examined the types of this species and of P. parvus 

 and agree with Borradaile that they are specifically distinct. In 

 addition to the characters which he has mentioned, the carpus of 

 the second peraeopod is proportionately longer in P. incertus and 

 the apex of the antenna! scale more sharply rounded. In both 

 species the foremost pair of spines on the dorsum of the telson is 

 placed at about the middle of its length. 



P. incertus was found at the Maldive Is. 



Periclimenes (Periclimenes) gracilis (Dana). 



1852. Anchistia gracilis, Dana, U. S. Explor. Exped., Crust. I, p. 578, 

 pi. xxxvii, figs. $a~m. 



Judging from Dana's figures this species, the type of the 

 genus Anchistia, will fall in the subgenus Periclimenes, but its 

 position is a little 'doubtful, for the accessory tooth on the dactylus 

 of the posterior legs is not mentioned in the description and 

 according to figure 5/ it is articulated at the base. 



The lamella of the antennal scale is shown to be acutely 

 pointed anteriorly in fig. 5a, but this is probably an error. 



P. gracilis is recorded by Dana from the Sooloo Sea. 



Periclimenes (Periclimenes) latipollex, sp. nov. 

 (Plate IV, fig. 3.) 



The rostrum is very slender, straight in its proximal part and 

 trending very slightly upwards at its distal end. It reaches a little 

 beyond the apex of the antennal scale and is armed above with 7 or 

 >i teeth, of which the posterior 2 or 3 are situated on the carapace 

 behind the orbit. The posterior tooth is not widely separated from 

 the second. Towards the apex the teeth are more distantly spaced 

 than at the base, but in both the specimens with complete rostra 

 the distribution is somewhat irregular. On the lower edge of the 

 rostrum in its distal half there are 3 teeth. 



The supra-orbital spine is wanting. The hepatic spine is placed 

 on a level with the antennal. The lobe on the frontal edge form- 

 ing the lower limit of the orbit is acute. The ocular spot is 

 merged in the cornea and can only be distinguished with difficulty. 



The spine at the outer distal end of the basal segment of the 

 antennular peduncle (text-fig. i8#) is long ; the lateral process 

 reaches about to the middle of the segment. The fused portion 



