REPORT ON FISHES. PART II : SISORIDAE AND CYPRINIDAE 359 



A. Lower jaw provided with sliarp, Imi-iiy coverins;'. liody densely covered with scales above the 

 lateral line Piplyt'lnis (s. str.) 



B. Lower jaw without sharp, horny coverins;'. 



a. Body almost naked; scales present alon.^' lateral line and hase of pectoral fin 



(iyiiniodiplycliits 



b. Body covered with scales Ptychobarbus 



In the character of the inoutli, the lower jaw, the lips and the squamation, however, 

 Diplychus differs so markedly from Ptychobarbus that I am unable to agree with Berg, and 

 consider Ptychobarbus to be a distinct genus. 



