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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 pusiulosus Vaill. X 3- 



Fig. 38. 



LissocJnlus sumatramis n. sp. 



Lettering for all the figures. 

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

 cation (not fold) between skin of rostrum and upper lip ; / 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; pg postlabial groove; ;-/ 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. 



