209 



Nom. in dig.: Ikan mendulah (Indragiri); Bentulu and 

 Mentulu (Djambi); Battu-ulu (Lampong); Bokong or Borokong 

 (river Bo); Wadon gunung (Malay. Batavia); Santran (Sundan.); 

 Wader (Javan.). 



Habitat: Sumatra (Lampong, Pangabuang, Lahat, Palem- 

 bang!, river Kwantan: Ringat! river Kampar: Gunung 

 Sahilan !, Danau Sialong lotong in Indragiri, Djambi !) ; Java 

 (Batavia, Tangerang, Rankasbetong, Lebak, Buitenzorg, 

 Parongkalong, river Brantas, Surabaya, Gempol); Borneo 

 (river Kapuas: Sintang!, Sebruang, Smitau, Knapei, Putus 

 Sibau ! - - river Mahakam : Bunut ! and its affluent river Bo, 

 river Pengarong, affluent of river Barito. Malacca, Siam, 

 Indo-China. 



21. Labeo Cuvier. 



(CuviER, Regne animal II. 1817, p. 194). 



Oblong, more or less compressed. Snout broadly rounded 

 or obtusely pointed, prominent, mostly covered with tubercles 

 on pores and sometimes having a lateral lobe or projection, 

 its anterior pendulous border forming an entire or superficially 

 incised rostral fold. Mouth moderate or large, protractile, 

 inferior. Lips thick, continuous, the upper and the lower one 

 fringed, lobed or not. The lower lip is distinctly separated by a 

 deep groove from isthmus or this postlabial groove is divided 

 by a broad or narrow connection between isthmus and lip 

 and therefore restricted to behind the lateral part of the lower 

 lip or even to the corner of the mouth. Lower lip with an 

 inner transverse fold. Jaws with a fleshy covering carrying a 

 deciduous horny sheath. A pair of rostral and maxillary barbels, 

 one of them may be absent. Eye with a free circular rim. 

 Dorsal elongate, without osseous rays, commencing before ven- 

 trals and ending before or above anal, with more than 9 

 branched rays. Anal short, with 5 branched rays. Scales moderate 

 or small. Lateral line running in the middle of the tail, 

 sensory tubes undivided. No sensory folds on head. Gill- 

 membranes broadly united with isthmus. Gillrakers usually short. 

 Pharyngeal teeth in three series, hooked, 5.4.2 2.4.5. 



Distribution: Freshwater of Indo-australian Archipelago 

 (Sumatra, Java and Borneo); Southern Asia and Africa. 



INDO-AUSTRALIAN FISHES III. 14 



