330 Annals of the South African Museum. 



small, sub-inferior, its width 1 to length of head ; nostrils on a line 

 with lower border of eye, nearer latter than end of snout ; eye 

 moderate, as long as or a little shorter than snout, f interorbital 

 width. 



Dorsal 30-36, its length 1J to H times in its distance from head. 

 Anal 23-27, originating below 8th to 12th ray of dorsal, equally dis- 

 tant from base of ventral and from base of caudal. Pectoral pointed, 

 nearly as long as head, 1-J times length of ventral, extending to base 

 of latter or a little beyond. Caudal with obtusely pointed lobes. 

 Caudal peduncle 2 to 2f times as long as deep, a little shorter than 

 head. 65-70 scales in lateral line, ^~ in transverse series on body, 

 ! in transverse series between dorsal and anal, 12 or 14 round 



-Lo~-Lu 



caudal peduncle. 



Colour, dark olive or brownish above, silvery white beneath. 



Total length 160 mm. (grows to 260 mm.). 



Habitat : Lower Zambesi ; Lake Nyassa ; Katanga ; Lake 

 Tanganyika." 



4. GNATHONEMUS. 



Mormyrus, part., Linn., Syst. Nat., i., p. 522 (1766). 

 Mormyrops, part., Marcusen, Bull. Ac. St. Petersb., xii., 1854, p. 14. 

 Gnathonemus, Gill, Proc. Ac. Philad., 1862, p. 443; Bouleng., Cat. 

 Freshw. Fish. Afr., i., p. 94 (1909). 



Teeth only in the middle of the jaws, conical, truncate or notched ; 

 mouth terminal ; dorsal and anal fins about equal in length. 



GNATHONEMUS MACROLEPIDOTUS, Peters. 



Mormyrus macrolepidotus, Peters, Mon. Ac. Berl., 1852, p. 275. 



Mormyrops macrolepidotus, Marcusen, Mem. Ac. St. Petersb. (7), 

 vii., 1864, No. 4, p. 142. 



Gnathonemus macrolepidotus, Bouleng., Proc. Zool. Soc., 1898, 

 p. 804, and Cat. Fresh. Fish. Africa, i., p. 112 (1909). 



Teeth conical, 3-5 in upper jaw, 6 in lower. Depth of body 3f to 

 3^ times in total length excluding caudal, length of head 4| to over 

 5 times. Depth of head to T Q its length, upper profile curved ; 

 snout 3f to 4 times in length of head; chin with a globular dermal 

 appendage; eye moderate, 5| to 7f times in length of head, 4- to f 

 length of snout, ^ to ^ interorbital width. 



Dorsal 20-22, originating above 2nd to 5th ray of anal, its length 

 2| to 2 T 7 ^ times in its distance from the head. Anal 27-28, nearer to 



