﻿than its own length, surrounded by 20 scales. Silvery, back 

 darkish, most scales with a more or less distinct dark margin. 

 The blackish colour of the superior part of the dorsal frequently 

 restricted to its anterior part. Length more than 400 mm. 

 [Description after specimens up to 404 mm. J. 



Nom. indig.: Aralin, Aralim, Sebrok (Palembang); Seluwang, 

 Mera mato (Djambi). 



Habitat: Sumatra (Lake Manindjau, Palembang!, Lahat, 

 Djambi!); Borneo (river Kapuas: Pontianak, Djongkong!, river 

 Barito: Banjermassin, river Margaraja: Prabukarta). — Siam. 



5. Osteochilus kahajanensis (Blkr.) 



Rohita kahajanensis Bleeker, Act. Soc. Scient. Indo-Neerl. II. 1857. Tiende 



Bijdi\ Ichth. Borneo p. 18. 

 Rohita (Rohita) kahajanensis Bleeker, Ichth. Arch. Ind. Prodr. II. Cyprini, i860, 



p. 180. — Atl. Ichth. III. 1863, p. 69. 

 Osteochilus kahajanensis Giinther, Cat. Brit. Mus. VII. 1868, p. 44. 

 Osteochibis kahajanensis Steindachner, Abh. Senckenb. Naturf. Gesellsch. XXV. 



1901, p. 452. 

 Osteochilus kahajanensis Popta, Notes Leyden Museum XXVII. 1906, p. 98. 



li 

 D. 3.15-17 ; A. 3-5; P- i-H— 15 ; v. 1.8; L. l. 33—36; L. tr.j . 



6f 

 Height more than 3, about 4 in length with caudal. Head 

 4.5 or more, 5.2 to nearly 6 in length with caudal. Eye more 

 than 3 to 5, twice in snout and more than twice in interorbital 

 space in large specimens, situated in the middle of the head. 

 Snout pointed, prominent; on each side of its front a large 

 pore. Maxillary barbels much longer than eye, the rostral ones 

 slender and much shorter. Origin of dorsal opposite to about 

 8th scale of lateral line, separated by 10— 1 1 scales from occiput. 

 Dorsal gradually increasing in height anteriorly, its anterior rays 

 somewhat shorter than head. Anal with the anterior rays 

 prolonged, somewhat shorter than dorsal, its origin opposite 

 to 2ist scale of lateral line and to end of dorsal or somewhat 

 behind it. Ventrals and pectorals subequal ; ventrals ending at 

 some distance from anus, their axillary scale very long, their origin 

 opposite to II th scale of lateral line and third branched dorsal 

 ray, separated by 4 series of scales from lateral line. Pectorals 

 shorter than head. Caudal deeply incised, the lobes pointed, 

 nearly equal to height of body. Least height of caudal peduncle 

 1.8 in length of head, nearly I'/j times in its own length, sur- 

 rounded by 16 scales. In preserved specimens colour of upper 



