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perforated scale. Dorsal concave, the height of its rather weak 

 spine as long as or shorter than head. Anal truncate, its 

 third weak spine about two third length of head. Ventrals 

 almost equal to pectorals, not reaching anus. Their origin, 

 which is about one scale behind that of the dorsal, is separated 

 by 2 '/a scales from the lateral line. Pectorals two third length 

 of head. Caudal deeply emarginate, lobes pointed. Caudal 

 peduncle longer than high, surrounded by 14 scales, 7 of which 

 above the lateral lines. Silvery, upper surface more or less 

 dark brown. A black blotch behind opercle, vertical fins more 

 or less darkish. Length 410 mm. 



Nomen indig. : Lemak and Djeladje (Palembang), Djeledjer 

 (Djambi), Djelawat (River Mahakam). 



Habitat: Sumatra (Palembang!, Indragiri, Kwantan river; 

 Taluk!, Danau Sialong lotong, Djambi!, Bagan api api !) ; 

 Borneo (river Kapuas: Pontianak, Sintang, Selimbau ! ; Danau 

 Sriang, Baram river, river Kahajan, Pengaron, Bandjermassin, 

 Mahakam river: Samarinda !, Batu Pangal!, Kota Bungun !). — 

 Siam. 



2. Leptobarbus melanopterus n. sp. 



Differs from the preceding species, when compared with 

 specimens of equal size, by having a much greater breadth 

 of its body, which may account for its having 5 ^^ scales above 

 the lateral line in the linea transversalis, and 15 scales round 

 the caudal peduncle, 8 of which are above the lateral lines. 

 The third spine of the dorsal is longer than the head. Upper 

 and lower half of caudal with a broad black intramarginal 

 longitudinal band. A similar one on anal. Ventrals, pectorals 

 and dorsal nearly totally black. Length of single specimen 

 242 mm. [Type of the species in the zoological Museum of 

 Amsterdam]. 



Habitat: Borneo (Upper Kapuas: Selimbau!); collected by 

 Mr. H. A. LORENTZ. 



Note: We presume that Bleeker had this species too, 

 as he says from L, hoeveni: "Un de mes plus petits individus 

 montre une bande noiratre longitudinale a chaque lobe de la 

 caudale, mais je n'en vois rien dans tous les autres." 



3. Leptobarbus melanotaenia Blgr. 



Leptobarbus melanotaenia Boulenger, Ann. Mag. Nat. Hist. (6) XIII. 1894, p. 249. 

 Leptobarbus melanotaenia Popta, Notes Leyden Mus. XXVII. 1905 — 1906, p. 150. 

 In DO- AUSTRALIAN FISHES III. 7 



