310 Records of the Indian Museum. [Vol.. VIII, 1913.] 



and fourth pairs bear six or seven spines, that of the filth (fig. 31) 

 is comparatively broad, a little more than one third the length of 

 the propodus, and bears about twenty-five spines. 



The branchial formula resembles that of C. excavata, but 

 epipods are invariably absent from both third and fourth peraeo- 

 pods. 



The telson bears from four to six pairs of dorsal spinules and 

 the round margin between the small spinule on either side of the 

 apex bears two pairs of spines. 



Large specimens reach a length of 33 mm. The eggs, in the 

 single ovigerous female examined, average '8 mm. by -4' mm. in 

 longer and shorter diameter. 



Caridina hodgarti appears to find its nearest ally in Stimpson's 

 C. grandirostns ^ from the Liu Chiu Is., but is easily distin- 

 guished by the characters of the rostrum. The gill-formula of 

 Stimpson's species is unknown. 



The pigmentation of living specimens is characteristic. The 

 lower edge of the rostrum is deeply pigmented and there is a 

 broad dark stripe, sometimes produced outwardly in the middle, 

 along the inner margin of each antennal scale The inferior por- 

 tions of^ all the abdominal pleura are dark and the telson is pig- 

 mented in its distal three quarters. The inner uropod is pigment- 

 ed throughout, except for a small pale area in the centre ; the 

 outer uropods are transparent. The actual tint, as in all species 

 of Caridina, is very variable; in C. hodgarti the dark patches are 

 frequently claret-coloured. 



Caridina hodgarti is a common species in the Upper Brahma- 

 putra valley. Specimens have been found at Kobo in the Abor 

 country (Regd. no. '^^ types), at Dibrugarh {'\f) and in the 

 Darrang district on the right bank of the Brahmaputra in irriga- 

 tion channels at Mazbat {^-^) , in the Dhansiri R. at Kowpati (^||^), 

 at Mangaldai {^) and in the Deshnoi R. on the frontiers of 

 Bhutan {—). The species has also been obtained in the Maha- 

 nanda R. at Siliguri {^) and in the Tista R. at Jalpaiguri {^), 

 both localities being near the base of the Sikhim Himalayas. 



The distribution, as far as it is known, may therefore be said 

 to extend along the base of the foot-hills from the Darjiling 

 district to the Abor country. 



1 Proc. Acad. Sci. Philadelphia, i860, p. 28. 



