284 SILURIDiE. 



from the occipital process one-fifth the length of the head, its distance from the caudal 

 tin measuring three times the length of the eye. Anal fin with 54 rays *, separated 

 from the caudal fin by a distinct interspace. Pectoral fin nearly half the length of the 

 head, the spine serrated on the outer border and two-thirds the length of the fin. 

 Ventral fin shorter, a little nearer the end of the snout than the root of the caudal fin. 

 Caudal fin rounded, about half the length of the head. 



Olive-brown above, white beneath. 



Known from a single specimen obtained in Lake Albert Edward by Mr. J. E. S. 

 Moore in 1900. 



Measurements (in millimetres). 



Total length 590 



„ „ (without caudal) 500 



Greatest depth 73 



Length of head 154 



Width of head 97 



Length of snout 30 



Diameter of eye 9 



Interocular width 60 



Width of mouth 57 



Length of nasal barbel 30 



„ maxillary barbel &§ 



,, inner mandibular barbel 54 



„ outer mandibular barbel 77 



„ pectoral fin 71 



„ ,, spine 49 



This species combines characters of C. anguillaris, robecchii, and lazera, differing 

 from the first in the character of the gill-rakers, from the second in the vomerine 

 dentition, and from the third in the latter character and in the wide space between 

 the dorsal and caudal fins. 



* 44 in the original description is a lapsus calami or misprint. 



