208 
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. Gillmem- 
branes free from each other and from isthmus. 
Synopsis of thesspeeres: 
1. Anal connected with base of caudal, head 5—52/3, A. 54-57. 
Mandibulary barbels nearly as long as the head... . C. Jeiacanthus p. 208. 
2. Anal free from caudal, head 41!/.—43/,, A. 59—74. 
Mandibulary barbels a little longer or shorter than eye . C. dimacu/atus p. 209. 
1. Callichrous leiacanthus (Blkr.). 
Wallago leiacanthus Bleeker, Nat. Tijdschr. Ned. Ind. V. 1853, p. 189. 
Lseudosilurus leiacanthus Bleeker, Ichth. Arch. Ind. Prodr. I. Siluri, 1858, p. 281. 
Callichrous leiacanthus Bleeker, Atl. Ichth. II. 1862, p. 85. 
Callichrous liacanthus Giinther, Cat. Brit. Mus. V. 1864, p. 47. 
Callichrous liacanthus Vinciguerra, Ann. Mus. Civ. Genova XXI. 1880, p. 169. 
> Ompok jaynei Fowler, Proc. Acad. Nat. Sc. Philadelphia, LVII. 1905, p. 466. 
(Baramriver, Borneo). 
Fig. 82. Callichrous leiacanthus (Blkr.). 
B. tr; ‘D. 4A. $4572 21 2s vee 
Height 4°/,—5'/,, head about 5—57/,, eye 6—7, at some 
distance above and behind the corner of the mouth, about 
1'/, in snout, 3'/,—5 in the interorbital space. Lower jaw the 
longer. Upper profile obliquely descending from dorsal to 
snout, neck somewhat elevated. Maxillary barbels extending 
