102 F. Day — Monograph of Indian Cyprinidm. [No. 2, 



Synopsis of Genera. 

 A. Abdomen rounded, not trenchant. 

 a. Dorsal Jin cotnmencing nearly opposite the ventral. Anal short (5 

 to 7 branched rays). 



1. Psilorhynchus, barbels. Mouth inferior, transverse. Lips 

 thick, entire, reflected from off both jaws, leaving them exposed as 

 sharp transverse ridges, but without any horny covering. Dorsal 

 fin short (7 branched rays), without osseous ray. Anal short, outer 

 pectoral rays unbranched. Scales of moderate size, none on the 

 chest. Lateral line complete. Bengal. 



2. Mayoa, 4 barbels. Mouth inferior, transverse, and surround- 

 ed by a large sucker formed by both lips. Dorsal fin short, (7 

 branched rays) without osseous ray. Anal short. Pharyngeal teeth 

 in 3 rows. Scales of moderate size, none on the chest. Lateral line 

 complete. ? Northern India. 



3. Discognathus, 4 or 2 barbels. Mouth inferior, transverse and 

 having a sucker on the lower lip only. Dorsal fin short (8 branch- 

 ed rays), without osseous ray. Anal short. Pharyngeal teeth in 3 

 rows. Scales of moderate size. Lateral line complete. Asia and 

 part of Africa. 



4. Zabeo, 4 or 2 or barbels. Mouth anterior or even inferior, 

 some with a lateral lobe to the snout : lips thick, one or both with 

 an inner transverse fold, and mostly fringed, usually a horny 

 covering to inside of lower lip. Dorsal fin of varying length (from 

 8 to 24 branched rays), without osseous ray. Anal short. Pharyn- 

 geal teeth in 3 rows. Scales large, moderate, or of small size. 

 Lateral line complete. Throughout Asia. 



5. Osteochilus, 4 or 2 barbels. Mouth nearly inferior ; lips 

 thick, fringed, or crenulated, but the lower reflected from off the 

 mandible, leaving it exposed as a sharp, transverse ridge. Dorsal 

 fin of moderate length (from 10 to 20 branched rays), without 

 osseous ray. Anal short, (5 to 6 branched rays). Pharyngeal 

 teeth in 3 rows. Scales of moderate size. Lateral line complete. 

 Burma and E, I. Archipelago. 



6. Girrhina, 4, 2, or barbels. Mouth broad, transverse, a 

 knob inside symphysis of lower jaw, lips thin, upper one fringed 

 or entire, edge of lower jaw sharp, with a thin lip and no horny 







