﻿H7 



of the dorsal fin and the upper and lower margins of the 

 caudal fin are black. Two large vertical blotches on the sides, 

 one under the posterior half of the basis of the dorsal fin 

 and somewhat behind it, the other on the two anterior thirds of 

 the free part of the caudal peduncle. Is said to reach + 500 mm. 

 [This description was kindly made for us by Miss Popta]. 



Nom. indig. : Dungan (Borneo). 



Habitat: Borneo (rivers Howong, Bo, Kajan). 



15. Labeobarbus Riippell. 



(RUPPELL, Mus. Senckenberg. II. 1837, p. 14). 



Elongate, moderately compressed. Snout more or less pro- 



Fig. 61. Labeobarbus tambra (C.V.) X Vs- 



minent; mouth inferior or subinferior, horseshoe-shaped; upper 

 jaw strongly protractile. Lips 

 more or less thick, continuous, 

 the lower with an uninterrupted 

 transverse fold, the median part 

 of which may be developed 

 into a lobe. Four barbels: an 

 anterior rostral pair, the other 

 pair behind corner of mouth. 

 Suborbital bones narrow. Dor- 

 sal with 8 — 9 branched rays 

 and a scaly sheath at its base; 

 its origin somewhat before or 

 opposite to origin ofventrals; 

 last osseous dorsal ray enlarged 

 and smooth. Anal with 5 

 branched rays. Scales large, with fine, longitudinal or converging, 



Fig. 62. Lower surface of head of 



Labeobarbus tambra (C.V.). 



a rostral, b maxillary barbel ; // lower lip 



with its median lobe w/; ul upper lip. 



