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



the merus is from 9 to 10 times as long as broad. The propodite 

 bears spinules on its posterior border (text-fig. 2b) and is from 

 3*5 to 4'5 times as long as the dactylus. 



The sixth abdominal somite is about 1*5 times the length of 

 the fifth. The spinules on the dorsum of the telson (text-fig. 2c) 

 are so arranged as to divide its length into three equal parts. , 



Large specimens are about 18 mm. in length. 



C 394-5/'- 



Port Blair, Andamans. 



S. Kemp, March, 



Four, includiu 







1915 ; Feb., 1921. 



Types. 



C 396/1. 



Cheval Paar, Ceylon. 



T. Southwell, Nov., 

 1910. 



Five. 



7717/6. 



Kabusa I., Meigui. 



' Investigator,' 

 March, 1887. 



One. 



398-9/1. 



Tor and Ain Musa, 



R. B. S. Sewell, 



Three. 





Gulf of Suez. 



1916. 





I have also seen three specimens from Mahe, Seychelles, 

 belonging to the Paris Museum (Alluaud coll.). 



The specimens from Port Blair were found at low water in 

 rock-pools at Aberdeen and in North Bay. The type-specimens 

 are from the former locality. 



A male and female from Port Blair, found on a muddy shore near 

 the mouth of Brigade Creek, differ from the specimens described 

 above in the absence of the vestige of the supra-orbital spine and 

 in the longer dactyli of the last three legs. In the third pair the 

 propodite is only from 2*6 to 3 times as long as the dactylus. 

 In the male the merus of the second peraeopod is about 4*5 times 

 as long as wide and the carpus about 2 *5 times as long as its 

 distal width. The male possesses three pairs of spines on the back 

 of the telson ; but this is no doubt an abnormally as the teeth are 

 not arranged symmetrically. 



C 400/1. Port Blair, Andamans. S. Kemp, March, Two. 



1921. 



The specimens were found among lumps of dead coral on 

 muddy ground. 



Palaemonella pottsi (Borradaile). 



1915. Periclimeri.es (Falciger) pottsi, Borradaile, Ann. Mag. Nat. Hist. 



(8) XV, p. 213. 

 1915. Periclimenes pottsi, Potts, Publ. Carnegie Inst. Washington, no. 



212, p. 82. 

 IQ17. Periclimenes (Falciger) pottsi, Borradaile, Trans. Linn. Soc. (j) 



Zool. XVII, p. 374. 



I have examined two specimens, both unfortunately in poor 

 condition, brought by Mr. F. A. Potts from the Torres Straits 

 and find that Borradaile was mistaken in referring the species to 

 the genus Periclimenes. The mandibular palp is present and 

 is composed of two segments. r 



The species is very closely allied to P. vestigialis, differing 

 as far as I am able to discover only in the fallowing characters : — 



