260 gangetic fishes. Order V. 



The fins are yellowish, and that of the back, together with the 

 upper ridge of the fish, are dotted. 



The head is oval. The mouth is of moderate size, and de- 

 scends almost perpendicularly. The jaws do not protrude in 

 opening ; and the under one is rather the longest. There are 

 no bones in the upper lip. The nostrils are nearer the eyes 

 than the jaw. The eyes are of moderate size, and convex, with 

 circular pupils. The gill-covers are rounded behind, and each 

 consists of only one plate, exposing its membrane to view. 



The ridge of the back is blunt, and slopes a little both ways 

 from the commencement of the fin. The lower edge is more 

 prominent. The vent is nearly in the middle. The lateral line 

 is low, and in a curve parallel to the belly. The scales are 

 small, and adhere firmly. 



The first ray of the dorsal fin is undivided, the remainder 

 branched, and the last of them split to the root. The pectoral 

 fins are much longer than the head, and each has eleven or 

 twelve rays. The first ray of each ventral fin is a very long 

 bristle, and the others are minute. The fin behind the vent oc- 

 cupies most of the under side of the tail ; and the first three of 

 its rays, increasing from the first, which is short, are undivided ; 

 the others are branched, the last of them being split to the root. 

 The tail fin, with a deep sinus, is shaped like a crescent, having 

 both horns sharp, and nearly equal in length. 



3d Species. — Cyprinus laubuca. 



A Cyprinus of the Chela kind, with seven rays in each ventral 

 fin ; with twenty-four in that behind the vent ; and with ten in 

 that on the back. 



The Laubuca (Layubuka) I found in the ponds of the north- 

 ern parts of Bengal. It is from two to three inches long, most 

 prominent below, and of a brownish green colour above, and sil- 



