301 
bone of the dorsal spine. Its sideborders slightly converging and 
nearly straight or very slightly convex. Maxillary and mandi- 
bulary barbels extending to the extremity of the pectorals 
or not so far, mental barbels nearly '/, shorter. Dorsal situated 
midway between pectorals and ventrals, its height equal to 
head without snout, its spine scarcely longer than postorbital 
part of head, the posterior border with strong and long, the 
upper end of anterior border with weak serrations. Adipose fin 
small, above anal, its base much shorter than that of the dorsal, 
about 5 times in the distance between both fins; when young 
Nt or 
Sass 
Sey, 
ioe 
&; — 
ees ed 
ACI 
Fig. 125. Arius danielsi Regan. K 5/5. 
much less. Height of anal more than twice in head. Ventrals 
2'/, in head, extending on anal. Pectorals about equal to 
head without snout, their spine somewhat stronger than and 
as long as that of the dorsal, strongly serrated at the inner 
side, feebly denticulated at the outer side. Caudal forked, 
its pointed lobes more than thrice longer than the median 
rays. Villiform teeth in the upper jaw in a broad, strongly 
curved band, the two bands in the lower jaw much narrower. 
