226 



25. Paracrossochilus Popta. 



(POPTA, Notes Leyden Mus. XXIV. 1902 04, p. 200). 



Elongate. Head conical. Dorsal outline somewhat convex. 

 Head and body ventrally flattened. Mouth inferior. Snout 

 prominent, rounded, anteriorly on each side with (males?) or 

 without a strong horny tubercle. Upper lip forms a broad fold, 

 covered by numerous round soft papillae, arranged in longi- 

 tudinal series towards its border, which is superficially crenu- 

 lated and overhangs a wide vestibulum of the mouth. The 

 lower lip forms a median prominent broad body, emarginated 

 anteriorly, rounded laterally, not separated from the isthmus 

 and covered with the same papillae as the upper lip. It has 

 on each side a lateral part, forming a soft, curved prolongation 

 connected with the upper lip, situated in a deep groove repre- 



Fig. 91. Paracrossochifas vittatus (Blgr.) X l1 /2- 



Separate figure: view of ventral surface of head, a rostral, b maxillary barbel; 

 / lateral, m median part of lower lip (//); ul upper lip. 



senting the lateral part of a postlabial groove, where it is 

 folded. The upper lip carries a barbel, where it is connected 

 with the forward prolongation of the lower lip. A pair of rostral 

 barbels at the inner side of a lateral furrow, which is a forward 

 continuation of the postlabial groove. Jaws with sharp edges, 

 bordering the transverse gape of mouth, the lower one with a 

 symphysial tubercle. Eye with a free orbital margin. Dorsal 

 with 8 branched rays, simple rays not ossified, originating far 

 in advance of origin of ventrals. Anal short, with 5 branched 

 rays. Caudal bifurcate. Ventrals and pectorals horizontal. Scales 

 large. Lateral line straight, running in the middle of the tail. 

 Pharyngeal teeth 6.33.6. Branchial openings narrow. Gillmem- 

 branes broadly united to the isthmus. 



Distribution: The single known species from Borneo, in 

 mountain streams. 



