1871.] F.Day — Monograph of Indian Cyprimd*. 109 



the 4 next only slightly branched. Dorsal arises in advance of the 

 ventral. Caudal slightly forked. 



Scales — none on the chest. 



Lateral line — proceeds direct to the base of the caudal fin. 



Colours. — Greenish brown, no marks existing except a dark 

 blotch under the dorsal fin and a mark at the base of the caudal. 



Habitat. — Probably Northern India, 2 specimens in the Calcutta 

 Museum, the longest 3|- inches. 



III. Genus, Discognathus, Hechel. PI. IX. f. 3. 



Garra, Ham. Buch. — Platycara, McClelland. — Biscognathichthys, 

 et Lissorhynchus, Bleeker. 



Body elongated, sub cylindrical. Mouth transverse, semicircular, and 

 inferior ; upper and lower lips continuous : no lateral lobes to snout, 

 which projects beyond the mouth. A suctorial dish on the chin, formed 

 of the lower lip : upper lip fringed. Barbels four (Garra, Ham. Buch.) 

 or one 'pair only at each angle of the mouth, {Biscognathus, Heckel) . 

 Pharyngeal teeth uncinate and in three closely approximating rows 2, 4, 5- 

 5, 4, 2. Dorsal fin with few rays, commencing slightly in advance of 

 the ventrals, its base scaleless : Pectoral horizontal : Anal short. Scales 

 of moderate size, no enlarged anal scales. Lateral line continued to the 

 centre of the base of the caudal fin. 



Geographical distribution. — Rivers, more especially mountain 

 streams, of Asia and Abyssinia : extending throughout India, Cey- 

 lon and the Tennasserim Provinces. 



Synopsis of Species. 

 1. Biscognathus lamta,D. 11, A. 7, L. 1. 33 — 36, 4 barbels. A 

 black spot behind gill opening and generally a band along the side. 

 Throughout India, Ceylon and Tennasserim Provinces. 



1. DlSCOGNATHUS (GaRUA) LAMTA. 



Cyprinus lamta, Ham. Buch., Fish. Ganges, pp. 343, 393 ; *Cuv. 

 and Yal., xvi, p. 386. 



Cyprinus gotyla, Gray and Hardwicke, Ind. Zool. c. fig., *Cuv. 

 and Yal., xvi, p. 387. 



Gonorhynchus rupeculus, McClelland, pp. 281, 373, pi. 43, f. 4, 5 ; 

 *Cuv. and Val. xvi, p. 467. 



