264 



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



broad where they begin, in the proximal third of the posterior bor- 

 der, and become longer and more slender as they approach the apex. 

 Excluding the terminal spines the telson (text-fig. g2a) is less 

 than twice as long as its basal breadth ; it bears two very large 

 dorsal spines on either side. The median and intermediate apical 

 spines are subequal and much longer than the outer. The outer 

 uropod (text-fig. 92ft) is shorter than the inner, with the spine that 



a, 



Text-fig. 92.— Pontonia okai, sp. nov. 

 a. Telson.* b. Uropods. 



terminates the outer border placed close to the distal end. 



A single pair of specimens of this species has been examined. 

 The male is about 8*o mm. is length and the female 8'5 mm. 



The species is related to Borradaile's P. ascidicola, the des- 

 cription of which is very meagre, but differs conspicuously in the 

 proportions of the two ultimate segments of the third maxilliped. 

 In P. ascidicola, also, the carpus of the first leg is longer than the 

 chela and the fingers of the smaller second leg are said to be pro- 

 vided with teeth just as in the larger limb of the pair. 

 C421/1. Off C. Negrais, Burma, 'Investigator,' Nov., Two, Types. 



I5°25' N., 93°45' E., iooo- 



40-49 fms. 



The specimens were found by Dr. Asajiro Oka when working 

 at the collection of Tunicata belonging to the Indian Museum. 

 He discovered them in the branchial sac of the type-specimen 

 of Ascidia willeyi, Oka. 



Pontonia anachoreta, sp. nov. 



This species is closely allied to P. okai and also lives in asci- 

 dians. It differs from the description given above only in the 

 following points : — 



