cclxxvii 



Sub-Family — Cyprinince. 

 Air-vessel present, not enclosed in bone. 



A. Abdomen rounded, not cutting. 



Genus — Psilossynchus, Mc Clelland. 



Back somewhat elevated. Head moderately depressed. Snout more or 

 less spatvlate. Mouth small, transverse, inferior. Lips entire, not con- 

 tinuous, reflected from off both jaws, and studded with glands. Barbels 

 absent. Borsal fin with few rays, commencing opposite the ventrals : 

 pectorals horizontal, with their outer rays simple and unbranched : anal 

 short. Scales of moderate size, none on the chest. Lateral line complete, 

 continued direct to the centre of the base of the caudal fin. 



1£4- Psilorhynchus balitora, Ham. Bueh. D. 9-10, A. 7, L. 1. 33. 

 Reddish brown, irregularly marked with black. North-East Bengal and 

 Assam. 



IJiB. Psilorhynchus sucatio, Ham. Bueh. D. 9, A. 7. Snout much 

 produced. Greeuish, with scattered dots. North-East Bengal. 



Genus — Mayo a, Bay. 



Body anteriorly depressed, posteriorly compressed : snout rounded and 

 smooth. Barbels four, two on the snout, and one at each angle of the 

 moiith. Byes lateral. Mouth small, transverse, on the inferior surface of 

 the head, and surrounded by a large sucker formed of both lips, which are 

 thick, and have a free posterior edge. Pectorals and ventrals horizontal: 

 dorsal without an osseous ray, and commencing somewhat in advance of 

 the ventrals. Pharyngeal teeth hooked, in three rows, 5, 3, 1/1, 3, 5. 

 Scales of moderate size, none on the chest. Lateral line continued direct to 

 the centre of the base of the caudal fin. 



14.6. Mayoa modes ta, Day. D. 8, A. 6, L. 1. 35, L. tr. 41/4$. Green- 

 ish brown ; a blotch below dorsal fin and another at the base of the caudal. 

 Probably from the Himalayas, to 3| inches in length. 



Genus — Biscognathus, Heckel. 



Garra, Ham. Bueh. : Plalycara, McClell. : Biscognathicthys et Lis- 

 sorhynchus, Bleeker. 



Body elongated, sub-cylindrical. Mouth transverse, semi-circular and 

 inferior : zipper and lower lips continuous : no lateral lobes to snout, which 

 projects beyond the mouth. A suctorial disc on the chin, formed by the 

 lower lip : upper lip fringed. Barbels four (Garra), or one pair only at 

 each angle of the mouth (Discognathus). Pharyngeal teeth hooked, in three 

 closely approximating rows, 2, 4, 5/5, 4, 2. Borsal fin with few rays, 

 commencing slightly in advance of the ventrals, its base scaleless. 

 pectorals horizontal : anal short. Scales of moderate size, no enlarged anal 

 scales. Lateral line continued to the centre of the base of the caudal 

 fin. Gill-rakers few, short, and widely set. Air-vessel small. 



lift . Biscognathus lamta, Ham. Bueh. Uho-gu-ru and Koor-ka, 

 Pauj. : Cul-korava, (stone ophiocephalus) , Tam. : Pandi p alike, Can. : 

 Ko-rafi-kaoli, Hind. (Mysore) : P utter -chettah, N. W. Prov. : Choak-si, 

 Beng. D. 11, A. 7, L. 1. 33-36. Four barbels : a dark spot behind 



