734 Records of the Indian Museum. I^Vol. XXII, 



clouded vertical bands on the body and a number of stripes on the 

 caudal fin. The membrnnes between the first few rays of the dor- 

 sal fin are black, and here and there are a number of black patches 

 on the head and on the body. The under surface of the head and 

 body are pale white. 



Locality. — Psilorhynchus sucaiio is found in rapids at the 

 base of the Darjiling Himalayas. Four young specimens were col- 

 lected by Dr. Annandale in the Mahanadi River at Siliguri (alt. 

 200 ft.) Mr. vShaw's specimens are from the Mahanadi River and 

 the Sivoke River of the Darjiling District. 



Measurements in inilliuietres. 



Total leny ill of body (excluding' caudal) 



Length of head 



Width ,, „ 



Depth of body 



Diameter of eye 



Length of snout 



Interorbitril width 



Length of caudal peduncle 



Least height of caudal peduncle 



Distance from tip of snout to anterior origin of 



dorsal fin 

 Distance from base of caudal fin to anterior origin 



of dorsal fin . 

 Distance from tip of snout to anal opening 



,, base of caudal fin to anal opening ... 

 Longest ray of dorsal 



,. ,, ., anal 



Length of pectoral hn .. 



., veniral 



Oreinus molesworthi, Chaudhuri. 



1913. Oreinus iiiotL'swortlii, Chaudhuri, Rec. Ind. Mas, \'lll, p. 24;;, 

 pi. \"ii, hgs. 2, 2a, 2b. 



This species was described by Chaudhuri (op. cit.) from a single 

 specimen from Yembung at an altitude of iioo ft. in the Abor 

 Hills. There is one specimen in Mr. Shaw's collection which I 

 refer to this species after having compared it with the type-speci- 

 men and with the description and figures given by Chaudhuri. 



Chaudhuri says that " the width of the mouth is nearly two 

 and a half times the length of the head." Probably he meant 

 to say that the width of the mouth was contained nearly two 

 and a half times in the length of the head; this is very nearly 

 correct. I find that the so-called scaleless portion of the body, 

 which is situated behind the opercle and below the lateral line, 

 possesses rudimentary scales which in the type-specimen are mostly 

 hidden by the slime of the skin. In the specimen from the Dar- 

 jiling Himalayas, which is 185 mm. in length including the caudal, 

 there are only a few small conical warts on the snout and the 

 body is comparatively less deep. The caudal fin is deeply forked 

 with both the lobes pointed, the upper longer than the lower. 



