127 



15 or 1 6 scales from occiput. Anterior rays of dorsal some- 

 what prolonged, the highest one about equal to or longer than 

 head. Origin of anal opposite to 32nd O r 33rd scale of lateral 

 line and situated behind end of dorsal. Anterior prolonged 

 rays of anal equal to or shorter than head. Pectorals and 

 ventrals subequal. Origin of ventrals separated by 7 scales from 

 the 1 5th scale of lateral line and opposite to 3rd branched 

 dorsal ray. Pectorals nearly equal to head. Caudal deeply 

 emarginate, the lobes pointed, longer than head. Least height 

 of caudal peduncle 1.6 in head, about equal to its own length, 

 surrounded by 2024 scales. Longitudinal darkish bands, 

 corresponding to the series of scales. A large black blotch at 

 the end of the caudal peduncle. [Description made after two 

 specimens of 152 and 280 mm.]. Length 280 mm. 



Habitat: Sumatra (Si-Djundjung!, Djambi !) ; Borneo (river 

 Kapuas: Pontianak, Smitau and its affluent river Man- 

 dai). Siam. 



2. Osteochilus melanopleura (Blkr.). 



Rohita melanopleura Bleeker, Nat. Tijdschr. Ned. Indie III. 1852, p. 430. 

 Rohita (Rohita) melanopleura Bleeker, Ichth. Arch. Ind. Prodr. II. Cyprini, 1860, 



p. 163. Atl. Ichth. Ill, 1863, p. 62. 



Osteochilus melanopleurus Gunther, Cat. Brit. Mus. VII. 1868, p. 40. 

 Osteochilus melanopleurus Vaillant, Nouv. Arch. Mus. Hist. Nat. (3) V. 1893^.74. 

 Osteochilus melanopleurus Fowler, Proc. Acad. Nat. Sci. Philadelphia (2) LVII. 

 P- 479- 



D. 3-1618; A. 3.5; P. 1.1517; V. 1.8; L. 1. 45535 



II - 12 



L. tr. i . 



II - 12 



Height 2.7 3, 3.6 3.8 in length with caudal. Head about 

 4, 5 or a little more in length with caudal. Eye a little more 

 than 4, about i*/ 2 in snout, and considerably more than twice 

 in convex interorbital space, situated in the middle of the 

 length of the head. Snout blunt, without pores, lower jaw 

 strongly ascending from the blunt chin. Maxillary barbels 

 longer than eye, the rostral ones shorter. Origin of dorsal 

 opposite to about the I2th scale of lateral line, separated by 

 more or less than 20 scales from occiput. Dorsal with the 

 anterior rays prolonged, as high as body or shorter. Anal 

 opposite to about 34 th scale of lateral line and to the i6 th 

 branched dorsal ray, its height somewhat more or less than 



