S2i 



On the Fresh Water 



[No. 35, 



fin. About 4 inches long ; height of an inch. In the Beema 

 river. 



* Leuciscus alkootee, (Sykes.) 

 An elongated silver white, slightly compressed, minute chela^ with 

 the dorsal fin of 8 rays, very far back ; anal about 10 rays ; with bur- 

 nished silver gill covers, and black orbits ; rarely more than an inch 

 long, and not much thicker than a good sized crow quill. 



Gen. Rliodeus. Agassiz. 

 Body somewhat broad, compressed ; dorsal medial. 



Rhodeus Indicus. New Species. 

 Muzzle pointed, head 4 times in the length of body ; profile of 

 back angular, rising to the dorsal, falling thence to the caudal ; 

 abdomen arched ; height 2\ times in length ; lateral line curving 

 downwards ; continuing only for about one-third of the body, as in 

 the European R. amarus ; about 50 scales along the sides in 16 

 rows, eye large, near the muzzle ; green above, silvery beneath, a 

 yellow streak along the sides, fins colourless ; length about 3 inches, 

 D. 2-7, A. 7. 



I have found this curious species only in the Palghat river, in san- 

 dy bottom. 



lihodeus macroce'ph.alus. New Species. 



Nearly allied to the last ; diflfers in its larger head, more fusiform 

 body, gradually thinning from the pectoral fin backwards ; head about 

 3^ times in length of body ; height the same ; scales minute, lateral 

 line interrupted, as in the last; eye large — D. 9, A. 7 — green above, 

 silvery beneath ; length about 2 inches. Common in the Cavery 

 and its tributaries, and in the Carnatic in tanks. 



It is possible that this may be the Leuciscus sulphureus of Valen- 

 ciennes which I have previously given as a Systomus^ as he places it 

 close to the C. amarus, but without giving the number of its scales, 

 or any thing about the interrupted lateral line, and as he places near 

 it another fish with large scales, it is impossible to be certain to what 

 subdivision his fish belongs. 



Gen. Perilampus. McLelland. 

 Body deep, compressed, dorsal behind, placed opposite a long anal ; 

 apices of jaws raised nearly to a line with the dorsum; ventral mar- 

 gin much arched. 



