Pimelodus. gangetic fishes. 171 



covered with blunt teeth. The membrane of each gill-cover 

 contains five rays. The first ray of the back fin is very short, 

 and the last is divided to the very root. There are eleven 

 rays in each pectoral fin ; the first seven of those in the fin be r 

 hind the vent are undivided. There are only fifteen distinct 

 rays in the fin of the tail. 



8th Species. — Pimelodus jatius. 



A Pimelodus with six tendrils not longer than the head ; with 

 the fin of the tail divided into two lobes ; with eight rays in the 

 back fin, the prickle being indented on both edges, and ending 

 in a flexible point much longer than the membrane ; with 

 twenty-one rays in the fin behind the vent ; withTno teeth on 

 the palate ; and with opaque sides. 



The Jatius (Jat gagora) is a third species, which differs so 

 little from the Gagora, that I shall only mention the few parti- 

 culars, besides those contained in the specific character, in 

 which it differs from the description of that fish. 



The Jatius is found in the same place, grows to the same size, 

 and has similar colours with the Gagora, only the spot on the 

 hinder back fin is more distinct. On the palate there are no 

 bones covered with teeth ; but there is a kind of membranous 

 veil behind the upper jaw. There is no slit on the throat. 

 The first fin of the back, the pectorals, and the fin behind the 

 vent, entirely resemble those of the Arius just described, only the 

 last contains one ray less. 



8th Species. — Pimelodus nenga. 

 A Pimelodus with six tendrils longer than the head ; with the 

 tail fin divided into two lobes ; with nine rays in the foremost 

 back fin, the prickle being indented on both edges, and end- 

 ing in a flexible point, much longer than the membrane ; with. 



