91 



Heiglit^ of tlie body a little more than one-fourtli of the total 

 length (caudal included). Length of the liead one-fifth. The eye 

 lies in the anterior half of the head , its posterior margin just 

 forming the raiddle of the length of the head ; its diameter is a 

 little more than the length of the snont and the iuterorbital space; 

 the latter is very convex. The skinny flap of the lower jaw is 

 half the length of the snout. Width of the mouth half the .diameter 

 of the eye. Very weak and few teeth, three in the upper jaw, two? 

 in the lower. Profile of the head very convex. Pectoral twice as 

 long as the ventral and extending beyond the anterior half of the 

 latter. Distance between the end of the ventral and the anal 

 agreeing Avith the length of the former. The length of the caudal 

 peduncle agrees with that of the head. 



Shining silvery over the whole body, especially on the lower 

 part of the head. 



One specimen, total length, caudal included, 10,8 cm. 



Mormyrus {Mormyrops) sioanenburgi 

 D 27, A 50; L.1. ca. 96 



Closely allied to M. Zambanenje Ptrs. 



Teeth on the palate and on the tongue. Body elongate. Snout 

 rather long, straight. 



Height of the body contained six times in the total length , 

 length of the head (without the opercular flap of skin) four times. 

 Length of the snout one-fourth of the length of the head. Upper 

 and lower jaw subequal in length ; teeth notched || in number. 

 Eye small , situated for its greater part in the anterior third of 

 the head. Iuterorbital space convex, twice the diameter of the eye 

 and three-fourths of the length of the snout. Pectoral half the 

 length of the head. Ventral fin two-thirds of the pectoral , dis- 

 tance between its base and the end of the pectoral half the length 

 of the ventral. Distance between beginning of the dorsal and tip of 

 the snout two-thirds of the total length. Length of the caudal pe- 

 duncle with caudal two-thirds of the length of the head. 



Brown (in spirits) , dotted all over with dark , minute points. 



