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 ! / 3 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 



Fig. 125. Arius danielsi Regan. X 5 /6- 



much less. Height of anal more than twice in head. Ventrals 

 2 ! / a 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. 



