4 2 



between dorsal and caudal, originating midway between origin 

 of ventrals and caudal or a little nearer to ventral; its height 

 scarcely less than that of dorsal. Ventrals reaching anus, shorter 

 than head and scarcely shorter than pectorals. Caudal feebly 

 notched. Body entirely covered with imbricate scales, of which 

 there are about 30 between dorsal and ventral fins. Olive 

 above, with or without traces of 17 darker bars across the 

 back, yellowish beneath; fins gray or grayish, without spots. 

 Total length 85 mm. 



Habitat: Borneo (Bongon !). 



Note: This species, the types of which have been studied 

 by us in the British Museum is hardly different from N. fas- 

 ciatus (C. V.). The only differences are, that the caudal fin is 

 feebly notched in N. olivaceus, deeply emarginate in N.fasciatus, 

 that in the former the ventrals reach the anus, which is not 

 the case in N. fasciatus. The latter species has also a series 

 of black spots on the dorsal rays, which are wanting in 

 N. olivaceus. 



Doubtful species. 

 i. Nemachilus notostigma Blkr. 



Nemachilus notostigma Bleeker, Versl. Akad. Amsterdam XV. 1863, p. 254. 

 Nemachilus notostigma Gunther, Cat. Brit. Mus. VII. 1868, p. 352. 



D. 2.8; A. 3.56; P. 1.9; V. 1.6-7. 



Height 7 ! / 2 8 in total length, head more than 5 in length. 

 Eye about 5 ! /2 rnore than once in interorbital space, situated 

 about in the middle of the length of the head. The snout being 

 somewhat shorter than the postorbital part of the head. Outer 

 rostral barbels longer than inner ones and reaching to eye; 

 maxillary barbels surpassing eye. Dorsal slightly oblique, 

 straight, with the anterior corner rounded, anterior rays opposite 

 to ventrals. Anal acute, its distance from end of dorsal, more 

 than half length of last named fin. Ventrals inserted before 

 middle of length. Pectorals not much shorter than head. Caudal 

 distinctly emarginate. The free portion of the tail is, after 

 GUNTHER, as long as deep. Body with twelve or thirteen 

 brownish crossbands, broader than the interspaces between 

 them ; base of caudal with a blackish transverse streak. Dorsal 

 with a blackish spot at its anterior base, the rays with two 

 to four black dots, as also the caudal rays. Length, as far as 

 published 71 mm. 



