10. OSTEOCHILUS. 41 



much longer than the eye, which occupies the middle of the length 

 of the head. The height of the body is contained twice and two-thirds 

 in the total length (without caudal), the length of the head thrice and 

 one-fourth or four times. Body with numerous small silvery spots 

 iiTcgularly scattered ; a large black transverse blotch on the midJle 

 of the side of the abdomen. 

 Sumatra, Borneo ; Siam. 



a. One of the typical specimens. From Dr. Bleeker's Collection. 

 6. Half-grown. Siam. From M, Mouhot's Collection. 



2. Osteochilus bomeensis. 



Rohita bomeensis, Bleek. Act. Soc. Sc. Ind.-Neerl. ii. Borneo, x. p. 17; 

 or Prodr. Cypr. n. p. 1G4 ; or Atl. Ichthyol. Cypr. p. 63, tab. 8. 

 fig. 5. 



B. 20. A. 7. L. lat. 47. L. transv. 8/9. 



Six and a half longitudinal series of scales between the lateral 

 line and the ventral fin. Snout with five pores in front, that in the 

 centre being the largest. Barbels at least as long as the eye, which 

 occupies the middle of the length of the head. The height of the body 

 is one-third of the total length (without caudal), the length of the 

 head two-sevenths, A large blackish spot on the root of the caudal fin. 



Borneo. 



a. Type of the species, 3 inches long. Pontianak. From Dr. Blee- 

 ker's Collection. 



3. Osteochilus hasseltii. 



Rohita hasseltii, Cuv. ^ Val. xvi. p. 274 ; Bleek. Not. Tydschr. Ned. 



Ind. v. p. 450 ; or Prodr. Cypr. p. 171 ; or Atl. Ichthyol. Cypr. p. G5, 



tab. 14. fig. 1. 

 leiorhynchos, Bleek. Verh. Bat. Gen. xxiii. Midd. Oost-Java, 



p. 19. 

 artedii, Bleek. Nat. Tydschr. Ned. Ind. i. p. 434. 



D. 18-19. A. 7. L. lat. 35. L. transv. 5t?. 



o 



Four longitudinal series of scales between the lateral line and the 

 ventral fin. Snout without pores. The upper barbels are about cue- 

 third the size of the lower ones, which are longer than the eye. Eye 

 nearer to the end of the snout than to that of the operculum. The 

 height 01 the body is contained from twice and two-thirds to thrice 

 in the total length, the length of the head four times and a half, 

 or in large examples five times and a half. Young and half-grown 

 examples nearly always, adult sometimes, with about six series 

 of brown spots on the tail, one spot being on every scale. A round 

 black spot on the middle of the root of the caudal fin, disappearing 

 in old examples. 



Java, Sumatra, Borneo. 



a, h, c-e. Adult, half-grown, and young. East-Indian archipelago. 



