92 



One specimen, total length 11,7 cm. 



Mormyrus (Mormyrops) mariae. 

 D 37; A 59; L.1. ca. 100. 



Body elongate. Height of the body contained seven times in 

 the total length, length of the head five and a half. Height of 

 the head three-fifths of its length. Profile of snout and head convex ; 

 upper jaw somewhat Ipnger than the lower. Snout one-fourth of 

 the length of the head (the opercular flap of skin not included). 

 Teeth truncate || in number. Eye small , half the length of the 

 snout, and situated in the anterior third of the head. Interorbital 

 space convex , twice the diameter of the eye. Ventral fin two-thirds 

 of the length of the pectoral ; distance between extremity of pectoral 

 and base of ventral half the length of the pectoral. Distance 

 between ventrals laid backwards and anal twice the length of 

 the former. Space between ventrals and anal trenchant. The end of 

 the base of the anal a little behind that of the dorsal. Length 

 of the caudal peduncle, measured from the end of the base of 

 the dorsal one-third of the length of the head. Beginning of the 

 dorsal twice as f ar from the tip of the snout as from the base 

 of the middle caudal finrays. 



Dark brown (in spirits) above the lateral line, somewhat lighter 

 beneath. 



One specimen, total length 17 cm. 



EXPLANATION OF PLATE YI. 



Fig. 1. Latnprologus congoensis, 



Fig. 2 A. Atopochilus i,'üntheri , dorsal view of front part. 



Fig. 2 B. Atopochilus güntheri, ventral view of the same. 



Fig. 3. Mormyrus greshoffii. 



