200 



otherwise, even as the caudal, brownish, darker marmorated, 

 similar to the sides of the body. [After Volz, not seen by us]. 



Locality: One specimen, Kwantang river, near Djapura 

 (Indragiri, Sumatra). 



This species differs from 5. phaiosoma in the less numerous 

 dorsal rays (49 in stead of 53 58), the lesser height of the 

 body (5 in stead of 6'/ 2 ) and that in the single specimen 

 known the ventral is slightly behind and not below dorsal, 

 (see Max Weber & de Beaufort in Maass: ^Durch Zentral 

 Sumatra", II. 1912, Fische p. 13). 



3. Wallago Bleeker. 

 (BLEEKER, Ichth. Arch. Ind. Prodr. I Siluri 1858 p. 259'). 



Compressed, head broad, snout depressed; cleft of the mouth 

 slightly ascending. Eye with a free orbital margin, above the 

 level of the corner of the mouth. Nostrils remote from each 

 other, the anterior one tubulated. A maxillary, and some distance 

 behind the symphysis, a mandibulary pair of barbels. Dorsal 

 fin very short, without spine and composed of 5 rays. No 

 adipose fin. The long anal free from caudal, which is forked. 

 Ventrals behind or below dorsal, with 10 11 rays. Pectorals 

 with a spine. Teeth depressible, those in the jaws in a broad band, 

 those on the vomer in two patches. Gillrakers very short and 

 stiff. Gillmembranes free from each other and from the isthmus. 

 Branchiostegals 15 20. 



Fig. 78. Wallago miostoma Vaill. 



Synopsis of the species. 



I. Corner of mouth surpassing hindborder of eye, 21 



gillrakers W. attu p. 201. 



i) This is the first diagnosis of the genus, although the name Wallago was 

 used by BLEEKER since 1851, but without description. 



