20S 



hind the symphysis, a mandibulary pair of barbels. Dorsal 

 fin very short, without pungent spine, and composed of 4 rays. 

 No adipose fin. The long anal free or connected with caudal, 

 which is forked. Ventrals with 7 8 rays, below or a little 

 before dorsal. Pectorals with a spine. Depressible teeth in the 

 jaws in broad bands, those of the vomer in two separate 

 patches. Gillrakers few in number, widely set, much shorter 

 than branchial filaments. Branchiostegals 11 13. Gill mem- 

 branes free from each other and from isthmus. 



Synopsis of the species. 



1. Anal connected with base of caudal, head 5-5 2 / 3 , A. 54-57. 



Mandibulary barbels nearly as long as the head .., leiacanthus p. 208. 



2. Anal free from caudal, head 4^3 4 3 / 4 , A. 59 74. 



Mandibulary barbels a little longer or shorter than eye . C. blmaculatus p. 209. 



i. Callichrous leiacanthus (Blkr.). 



Wallago leiacanthus Bleeker, Nat. Tijdschr. Ned. Ind. V. 1853, p. 189. 

 Pscudosilurus hiacantJms Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 281. 

 Callichrotts leiacanthus Bleeker, Atl. Ichth. II. 1862, p. 85. 

 Callichrous llacanthus Gunther, Cat. Brit. Mus. V. 1864, p. 47. 

 Callichrous liacanthus Vinciguerra, Ann. Mus. Civ. Geneva XXI. 1880, p. 169. 

 ? Ompok jayncl Fowler, Proc. Acad. Nat. Sc. Philadelphia, LVII. 1905, p. 466. 

 (Baramriver, Borneo). 



Fig. 82. Callichrous leiacanthus (Blkr.). 



B. ii; D. 4; A. 54575 P- i- 1213; V. 8. 



Height 4 3 / 4 5'/3> h ea d about 5 5 2 / 3 , eye 6 7, at some 

 distance above and behind the corner of the mouth, about 

 i ! / 2 in snout, 3 ] / 4 5 in the interorbital space. Lower jaw the 

 longer. Upper profile obliquely descending from dorsal to 

 snout, neck somewhat elevated. Maxillary barbels extending 



