146 



Records of the Indian Museum. 



[Vol. XXIV, 



is equal in length with the palm. The fingers are usually un- 

 armed, but sometimes an obscure tooth is found on each, that 

 on the fixed finger in advance of that on the dactjdus. 



The last three peraeopods are for the most part similar to 

 those of the allied species. The dactylus, however, is shorter ; 

 it is from 4 to 4*5 times as long as its basal breadth, whereas in 

 P. indicus it is from 5*5 to rather more than 6 times (cf. text-figs. 

 13& and 15c). No clear distinctions are to be found in the abdo- 

 men, telson or uropods. 



Text-fig. 15. — Periclimenes obscurits, sp. nov. 



a. Second peraeopod of a male. b. Second peraeopod of a female. 



c. Dactylus of fifth peraeopod. 



Large specimens reach a length of about 17 mm. 



C 345-6/1- 



Springhaven, Madras 



S. Kemp, May, 1918. 



Twenty-four, 





Harbour. 





including 

 Types. 



C 347- 1 / 1 - 



Ennqr backwater, near 



N. Annandale, Sept., 



Nine. 





Madras. 



i9'5- 





The specimens from Springhaven were taken swimming round 

 buoys and piles encrusted with sponges, hydroids and other 

 marine organisms. Those from Ennur backwater were found in 

 company with P. indicus, from which they were easily distin- 

 guished by the well-marked rostral characters. 



