Mouth terminal, inferior or subinferior, generally small, pro- 

 tractile. The jaws with a soft or a horny covering or the lower 

 jaw with ^a sharp bony edge; without a symphysial knob 

 fitting in an incision of the upper jaw. Lips present or absent, 

 as also a postlabial groove (see below). A rostral and maxillary 



Fig. 36. Crossochilus gnathopogon n.sp. X 4- 



/$.-- 



Fig. 37- 

 Gyrinocheilus pustulosus Vaill. X 3- 



Fig. 38. 

 Lissochilus sumatratius n. sp. 



Lettering for all the figures. 



a. rostral, b maxillary barbels ; c horny covering of lower jaw; d line of demar- 

 cation (not fold) between skin of rostrum and upper lip ; f frenulum ; fr lateral 

 furrow including the parts of the mouth ; ip involuted part of upper and lower 

 lip ; Ij lower jaw ; // lower lip ; Ip lateral, m median part of postlabial groove ; 

 n nostril 5 pg postlabial groove 5 rf rostral fold' uj upper jaw: ul upper lip. 



pair of barbels; one or both may be absent. Scales small, 

 moderate or large, lateral line running along the median line 

 of the tail (exc. Leptobarbus). Pharyngeal teeth generally in 

 a triple series, exceptionally in a double or single series. 



