552 



Annals of ilifi South African Museum. 



MORMYRTJS LONGIROSTRIS, Peters. 



Mormyrus longirostris, Peters, Mon. Berl. Ac., 1852, p. 275, and 

 Keise Mossamb., iv, p. 83, pi, xvi, fig. 2 (1868) ; G-iinth., Cat. Fish., vi, 

 p. 210 (I860) ; Bouleug., Trans. Zool. Soc., xvii, 1906, p. 546, and 

 Freshw. Fish. Africa, i, p. 139, fig. 115 (1909) ; Pappenh. Mitth. Zool. 

 Mus. Berl. iii, 1907, p. 362. 



Mormyrus mucupe, Peters, tt. cc., pp. 275, 87, pi. xvi, fig. 1 ; G-'unth. 

 t. c., p. 215. 



Mormyrus longirostris, ~p&rt., Bouleng., Proc. Zool. Soc., 1908, p. 817, 

 and Poiss. Bass. Congo, p. 112 (1901). 



Teeth notched (mouth damaged in specimen ; about 5 to 7 teeth on 

 upper jaw, 8 to 12 on lower). Depth of body 3| times in total length 

 excluding caudal, length of head 3f times. Head If, times as long 

 as deep, with slightly curved upper profile ; snout produced, as 

 long as postocular part of head, its length 2f times its least depth ; 

 mouth very small, lower jaw feebly projecting ; eye moderate, its 

 diameter 2^ times in interorbital width, 12 times in length of head. 



Pio. 163. Mormyrus longirostris. 



Dorsal 65, originating in advance of ventral, 4f times as long as 

 anal, 1-J- times as long as its distance from end of snout. Pectoral 

 obtusely pointed, nearly | length of head. Ventral length of head. 

 Anal 17, originating a little nearer to base of caudal than to base of 

 pectoral. Caudal densely scaled, with rounded lobes ; caudal peduncle 

 H times as long as deep. About 95 scales in lateral line, ff in trans- 

 verse series on body, 40 in transverse series between dorsal and anal, 

 22 round caudal peduncle. 





