MOCHOCUS. 391 



Coloration as in M. niloticus, but pectoral, ventral, and anal fins often with some 

 brown spots. 



Measurements (in millimetres). 



Total length 31 



,, „ (without caudal) 2& 



Greatest depth o* 



Length of head 8 



Width of head 7 



Length of snout 2J 



Diameter of eye 2 



Interorbital width 3 



Width of mouth %\ 



Maxillary barbel 17 



Outer mandibular barbel 9 



Inner mandibular barbel 6 



Length of dorsal spine . 6 



„ pectoral spine 7 



Forty-two specimens were obtained in a kore at Fashoda by Mr. Loat, March 15-16, 

 1901 ; also one specimen at Lake No, 7.2.01. 



