1871.] F.Day — Monograph of Indian Cyprinidce. Ill 



Colours. — Greenish, with a bluish green band along the centre of 

 the body and extending along the middle of the caudal fin. Ab- 

 domen yellowish green. Fins yellowish,, stained darker at their 

 margins. In specimens from the Tennasserim Provinces a black 

 spot exists at the base of each dorsal ray. 



Habitat. From Syria throughout India and Ceylon to the Ten- 

 nasserim Provinces, and likewise found in Abyssinia. It attains 

 6 inches in length. 



IV. Genus— Labeo, Cm. PL IX, f. 4 a. b. 

 Rohita, pt. Cuv. and Val. — Tylognathus, HeckeL — ITypselobarbus, 

 Diplocheilus, Diplocheilichthys, Lobocheilus, Rohitichthys, Morulius, 

 Schismatorhynchus, et Gobionichthys, Bleeker. 



Body elliptical or moderately elongated, abdomen rounded, mouth some- 

 times anterior but mostly inferior, transverse and demi-oval. Lips thiek, 

 covering the jaws, one or both having an inner transverse fold. A soft 

 and moveable horny covering with a sharp margin on the inner edge of 

 one or both lips. Snout rounded, generally projecting beyond the mouth 

 and covered with tubercles, and sometimes having a lateral lobe or 'pro- 

 jection. Barbels small, four or two : if only one pair, they are on the 

 maxilla, the second being on the snout, or they may be absent. Pharyngeal 

 teeth hooked and in three roivs, 5, 4, 2 - 2, 4, 5. Dorsal fin elongated, 

 or of moderate length, destitute of any osseous ray, and arising anterior 

 to the commencement of the ventral. Anal short. Scales large, moderate, 

 or of small size. Lateral line running along the median line of the tail. 

 Gill rakers short. 



Dr. Giinther sub-divides this genus into Labeo in which the 

 dorsal fin has "more than nine branched rays," whilst Tylognathus 

 has " not more than nine branched rays" ; his reason for this artifi- 

 cial division being because " by uniting these two genera, I 

 should have been obliged to abandon the character of a long or 

 short dorsal fin for the definition of other very natural genera of 

 Cyprinoids." 



Geographical distribution. Throughout the fresh waters of the 

 plains of India, Ceylon and Burma. 



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