JOURNAL 



OF THE 



ASIATIC SOCIETY, 



Part II.— PHYSICAL SCIENCE. 

 No. I.— 1872 



Moxogbaph oe Indian Ctpeinid^i, Part IV, — by Burgeon F. Day. 



(With Plate I.) 



[Keceived 6th October, 1871.— Continued from p. 367 of vol. XL. Pt. VI, 1871.] 



Genus. — Bahilitjs, (H. B.) Bleeker, (PI. I.) 



Opsarius, sp, McClelland. 



Pacliystomus, sp. Heckel. 



Chedrus, (Swains.) Bleeker. 



Opsaridium, Peters, apud Gunther. 



Pteropsarion sp., Bhacra, sp. et Bola sp., Giinther. 



Abdomen rounded. Pseudobranchice present. Mouth anterior, some- 

 times oblique, having a moderate or deep cleft. Lower jaw with a knob 

 above the symphysis, and an emargination to receive it in the upper jaw. 

 Suborbital ring of bones generally broad, more especially seen in the third, 

 which may even be entirely behind the vertical from the posterior margin of 

 the orbit. Barbels four {Bachystomus, "Heckel," Bleeker), or two (Ben- 

 dilisis, Bleeker), or none (Barilius, Ham. Bueh.). Pharyngeal teeth 

 hooked, 5, 3 or 4, 2 or 1/1, or 2, 4 or 3, 5, or else 5, 2 or 4 / 4 or 2, 5. Dor- 

 sal fin ivithout osseous ray, of moderate length, inserted posteriorly to the 

 ventrals, sometimes extending to above the anal, which latter is somewhat 

 elongated. Scales of moderate or small size. Lateral line concave, con- 

 tinued on to the middle or loiver half of the caudal, or incomplete, or absent. 

 Gill rakers very short or absent. 



Geographical distribution. Fresh waters of India and Burma, extend- 

 ing to the Malay Archipelago ; also found in the Nile and East Africa. 

 1 



