The Freshiuater Fishes of South Africa. 



329 



pointed, a little shorter than head, twice as long as ventral, extend- 

 ing to middle of latter. Caudal tin with rather short, rounded 

 lobes. Caudal peduncle 2|- times as long as deep, a little shorter 

 than head. 48-50 scales in lateral line, j^ in transverse series on 

 body, * in transverse series between dorsal and anal, 12 round 

 caudal peduncle. 



Colour, pale brownish, darker on the back, spotted and marbled 

 with dark brown ; fins brown. 



Total length 70 mm." 



From Lake Ngami Basin, Bechuanaland. 



"This small Mormyr, of which two specimens are in the 

 collection, is most nearly related to M. Ihuysii, Stdr., from the 

 Senegal, which differs principally in the higher number of dorsal 

 and anal fin-rays." 



MARCUSENIUS DISCORHYNCHUS, Peters. 



Mormyr us discorhynchus, Peters, Mon. Bed. Ac., 1852, p. 275. 



Marcusenius discorhynchus, Bouleng., Proc. Zool. Soc., 1898, p. 7, 

 and Cat. Fresh. Fish. Africa, i., p. 81 (1909). 



Marcusenias tancjanicanus, Bouleng., Tr. Zool. Soc., xvii., 1906, 

 p. 545, pi. xxx., fig. 1. 



FIG. 7. Murcuxeiiius discorhynchus. f. 



"Teeth small, notched, 5 in upper jaw, 6 in lower. Depth of 

 body 3 to 3^ times in total length, length of head 4-J- to 4| times. 

 Head as long as deep ; snout rounded, 2 length of head ; mouth 



