360 



CYPRINID.E. 



the nose and the end of the fleshy portion of the tail ; the 

 first ray short, the second the longest, both simple ; the 

 others branched, diminishing in length gradually to the last, 

 which is the shortest ; the seventh ray as long as the base of 

 the dorsal fin : the pectoral fin rather small ; the ventral fin 

 arising on the same vertical plane as the dorsal ; the anal 

 fin large, commencing in a line with the end of the dorsal 

 fin when its rays are pressed : the tail large and forked. 

 The fin-rays in number are — 



D. 10 : P. 16 : V. 9 : A. 11 : C. 19. 



The colour of the top of the head blackish brown, with a 

 streak of the same dark colour passing down behind the 

 free edge of each operculum as far as the origin of the pecto- 

 ral fin : the whole of the upper part of the back bluish 

 black, the edge of each scale the darkest- part ; the sides 

 bluish white, passing into silvery white on the belly : the 

 dorsal and caudal fins dusky ; the pectoral fins reddish brown ; 

 the ventral and anal fins reddish white ; the irides golden 

 yellow, the upper, part dusky ; cheeks and gill-covers rich 

 golden yellow. 



The fish described was a male of thirteen inches in length, 

 and the milt appeared on pressure ; the season backward. 

 May 9th, 1835. 



