248 TELEOSTEI. PIIYSOSTOMI. 



4. Genus OREINUS, McClelland. 



Schisothorax, Sect. A, and BtcHtopyye, sp., Heckel. 



Abdomen rounded. Snout rounded ; mouth inferior and trans- 

 verse, mandibles short, broad, and flat, loosely joined together at 

 the symphysis ; margin of the lower jaw having a hard, horny 

 covering, thickest internally, and a thick fringed lower lip with a 

 free posterior edge, forming a sucker. Barbels four. Dorsal fin 

 rather short and arising opposite the ventrals, its last undivided 

 ray osseous or articulated, serrated or entire ; anal short. Scales 

 very small ; the vent and base of the anal fin in a sheath covered 

 by an enlarged imbricate row of scales. Lateral line passing to the 

 centre of the base of the caudal fin. 



Geographical Distribution. Eivers and some lakes in the Hima- 

 layan and sub-Him.alayan region, extending to the confines of 

 China. These fishes are rarely found in the rivers of the plains at 

 any distance from the base of the mountain-ranges. 



The present and the four succeeding genera, Schizopyyopsis, 

 ScJiizothoraA\ Ptycobarbus, and Diptychus, consist of carps scale- 

 less or more or less covered with minute scales. A membranous 

 slit exists anterior to the anal fin, which is laterally bounded by a 

 row of vertically-placed scales, like eave-tiles, continued along the 

 base of the anal fin. These genera form the Schizothoracince of 

 McClelland. 



Synopsis of Indian Species. 



]). 4/7, A. 3/5. Anal scales about half as 



large as orbit. Black spots on body 1. O. sinuatus, p. 248. 



D. 3/8, A. 3/5. Anal scales two thirds as large 



as orbit. Colours uniform 2. 0. richardsonii, p. 200. 



D. 3/8, A. 3/5. Anal scales about as large as 



orbit. Osseous dorsal ray weak. Colours 



uniform 3. O.plagiostomus^.-2'jO. 



282. (1.) Oreinus sinuatus. (Fig. 88.) 



Schizothorax sinuatus, HccM, Fisch. Caschmir, p. 21, t. 2. 

 Oreinus sinuatus, Day, Fish. India, p. 629, pi. cxxiv, fig. 4 (see 

 synon.). 



Gool-goolli and Saul, Punj. ; Jis, Cash. 



B. iii. D. 3-4/8. P. 17. V. 10. A. 2-3/5. C. 19. L. 1. 105. 

 Vert. 24/23. 



Length of head 5| to 6 in the total length. Eyes diameter 

 two ninths to one sixth of length of head, 2 to 2 diameters apart, 

 and almost entirely situated in the front half of the head. Inter- 

 orbital space rather convex ; snout rounded, with a very slight 

 appearance of pores. Mouth inferior, transverse ; lower lip well 

 developed, rugose, entire, having a free posterior edge, and forming 

 an adhesive sucker. The posterior edge may be concave or 

 slightly lobed in the middle or even straight. Inner side of lower 



