240 AUCHENOGLANIS BÜTTIKOFERI. 



teeth in a band that, at both sides of the symphysis, is 

 widened anteriorly ; in the fore part of this round widening 

 the teeth are larger. 



A. Biittikoferi differs from A. monkey chiefly in the 

 height of the body, in the length and roughness of the 

 head, in the larger eyes, in the nostrils placed nearer to 

 the eyes, in the shorter feelers and in other coloration. 



In the roughness of the head it approaches A. biscutatus 

 (Geoffroy) Gthr., but it is distinct from it by its lower 

 body, longer head, larger eyes, the situation of the nostrils, 

 the smooth lips, the arrangement of the teeth, the shape 

 of the adipose fin, the denticulation of the pectoral spine, 

 the coloration etc. 



Levden Museum, November 1913. 



Notes from the Leyden Museum, Vol. XXXV. 



