Gonorhynchus. INDIAN CYPRINID&. 371 
necessary, they will keep fresh as long as any other kind of fish; but if 
this be neglected, the stomach rapidly putrifies, in which state if it be 
necessary to use these fish, the thin parts adjoining the ventral fins should 
be removed. 
IIl—GonoRHYNCHUS PETROPHILUS, J. M. 
Journ. Asiat. Soc. Beng. 4. t. 1. 
For an account of this species I must refer to the fourth volume of the 
Society’s Journal, in which its habits are fully described under the head of 
* Kemaon Trout,’—the name given to it by English sportsmen, not from the 
sport it afforded, as it could not be induced to take flies or any sort of bait. 
The lower jaw is a mere valve placed on the under surface of the head, and 
used for uprooting and sucking into the mouth the slimy vegetation that ac- 
cumulates on the surface of rocks submerged in clear mountain torrents. The 
snout is elongated and muscular, without cirri; the scales are minute, and a 
double row of pores for the transmission of mucous are ranged along the 
lateral line. There are eight or nine rays in the dorsal fin, and the intestines 
are about eight lengths of the body, including the head and caudal fin. 
It inhabits streams in Kemaon at an elevation of 6,000 feet above the 
sea, and has been observed by Lieut. Hutton at similar elevations in the 
mountains north of Simla, as well as by Dr. Campbell in Nipal. The fishes 
of the Himalaya are as yet but little known, and the characters which I 
formerly gave of this species are now unsatisfactory even to myself; it is 
therefore to be hoped that residents in mountain districts will contribute 
small collections of the fishes of their neighbourhood to our Museum, or to 
other scientific institutions, where they may be properly examined. Should 
I be honored with any such consignments, the parties forwarding them 
may rest assured of their receiving as prompt an attention as circumstances 
may admit of. 
