240 
TEAVELS IN CENTEAL AFEICA. 
Malapterurus electricus, L. (Raad or Raasch.J 
The electric Silurus is spread over the whole of tropical Africa^ 
but evidently more numerous in the upper part of the Nile than 
below the cataracts. 
CHARACINIDjE. 
CiTHARINUS. 
Body compressed, covered with scales. Dorsal fin rather short, 
without spine, placed nearly in the middle of the length of the 
body ; a small adipose fin behind the dorsal ; anal rather long ; 
ventrals below the dorsal. Body elevated, covered with small 
scales; belly rounded in front of the ventrals. Cleft of the mouth 
transverse, with very thin lips, each lip with a single series of 
minute, ciliiform, moveable teeth; palate toothless. Intestinal 
tract with numerous circumvolutions. 
Citharinus geojfroyi, Cuv. 
D. 19. A. 28—30. V. 11. L. lat. 80—80. 
The height of the body is more than one-half of the total length 
(without caudal) ; basal half of the adipose fin scaly. Generally 
