356 



REPORT ON FISHES. PART 11: SISORIDAE AND CYPRINIDAE 



18 



Figure 18. Diptychus maculalus Steindachner. Air-bladder in different stages of growth. X l/^- (a) A 

 specimen, 220 mm. long, from Cliagra, Indian Tibet. (/)) .'\ specimen, 138 mm. long, from Leh, Indian Tibet, 

 (f) .K specimen, 72 mm. lung, from Lukong, Indian Tibet. ((/) A si)ccimen, 60 mm. lung, frum Nimu, Indian 

 Tibet. 



Distribution: D. imiciilalus is one of tlie iimst coniinoii species foiiiul in the Iiulus, 

 Tarim and the Yarkand river systems. It has also l)een fcuind in otlier parts of TilxH and 

 Nepal. It is an inhabitant of the rapids. 



Roiiarks: Reference may here be made of a species, "Diptyclius aiinumlalci" described 

 by i\euan''' from Katamundu in Nepal. I have shown elsewhere"" that the form is con- 

 generic with Siliiciilhoni.v and that tiie description is based on juvenile specimens. 



Genus Ptyclwbarbus Steindachner 



Ptychobarbus conirostris Steindachner 



1866. Plycliobarbiis conirostris. Steindachner, Verb. Zool.-bot. Gfs. Jl'ioi, X\'I, ]). 790, pi. xvii, 



fig. 4. 



1868. Ptychobarbus conirostris, Giinther, Cat. Pish. Prit. .Mas., \ll, p. 169. 



1876. Ptychobarbus conirostris, Day, Proc. Zool. Soc. London, p. 789. 



1878. PtycliolHirbits conirostris. Day, Sci. Res. 2nd Yarkand Miss., Ichthyology, p. 7, pi. ii, fig. 3. 



1878. Ptychobarbus conirostris, Day, Pish. India, p. 5^3. \A. c.xxv, fig. 3. 



1889. Ptychobarbus conirostris, Day, Faun. Brit. Ind., Fish.. 1, ]>. 253, fig. 91. 



'Regan, C. T.: Rec. Ind. Mhs.. I, p. 158 (1907). 



'Mukerji, D. D. : Rcc. Ind. Mus., XXXIII, pp. 63-65, figs. 1-4 (1931). 



