AUCHENOGLANIS BÜTTIKOFERI. 239 



this is anteriorly but little serrated in the upper part, in 

 the lower part it is smooth, on the sides it is striated. 

 The dorsal fin is rounded superiorly, it is situated in the 

 midst of the length of the body without caudal fin. The 

 adipose fin is 6'/2 times as long as high, its distance from 

 the first dorsal fin equals its height. The pectoral fins 

 measure ^/g of the length of the head, their spine is stronger 

 than the dorsal spine, anteriorly feebly serrated in the 

 upper part, in the lower part finely toothed, posteriorly 

 coarsely toothed, but not till the upper end, laterally it is 

 striated; its length equals ^/,g of the length of the head. 

 The ventral fins do not reach the anal fin, their length 

 equals ^/g of the length of the head, they are situated 

 half way under the two last dorsal rays. The anal fin 

 begins under the ''^/^o part of the adipose fin, its height 

 is equal to ''^/gy of the length of the head, its base of '/g. 

 The caudal fin is rounded, '/g of the total length. The 

 free portion of the caudal peduncle measures ^j^ of its height. 

 The fish is in spirits on the upper-side violetbrown 

 coloured (near 11 of Saccardo, 1894), on the under-side 

 anteriorly white, posteriorly yellowish with violetbrown 

 shade; the dorsal fin and the adipose fin are violetbrown, 

 the other fins are shaded with that colour. 



B. 9; D. I, 7; P. I, 7 ; V. 6 ; A. II, 11; C. 18. 



Length of individual 105 mm. 



Length without caudal fin 84 mm. 



Heigth of body 14 mm. 



Length of head till end of humeral process 30 mm. 



Width of head 20 mm. 



Height of head 13 mm. 



Length of snout 13 mm. 



Diameter of eye 4 mm. 



Interorbital space 8 mm. 



Auchenoglmiis Bilttikoferi comes nearest to Auchenoglahis 

 monkey Keilhack, of which is said: "Die Mandibularzahne 

 stehen in zwei runden Feldern, an deren hintere aussere 

 Ecken sich ein schmales Band anschliesst, das bis an den 

 Mundwinkel reicht." A. Bnttikofen has the mandibular 



Notes from the Leyden IMuseum, "V^ol. XXXV. 



