GNATHONEMUS. 



113 



length of snout, -J to f interorbital width. Dorsal 23-25, originating 

 above 5 th to 8th ray of anal, its length about 2^ times in its distance from 

 head. Anal 28-32, a little nearer base of caudal than base of ventral. 

 Pectoral obtusely pointed, shorter than head, reaching base of ventral or 

 a little beyond. Caudal scaled in basal half, with obtusely pointed lobes. 

 Caudal peduncle 2 to 3 times as long as deep, nearly as long as head. 

 50-69 scales in lateral line, 17 ^y in transverse series on body, g^ in 

 transverse series between dorsal and anal, 14 or 16 (rarely 12) round 

 caudal peduncle. Silvery, sometimes with black blotches. 



Total length 250 millim. Reaches a length of 320 millim. 



Zambesi, Katanga, Lake Bangwelu, llovuma River. — Types in Berlin 

 Museum. 



F. H. Melland, Esq. (P.). 

 Rev. L. Julia (C). 

 T. Codrington, Esq. (P.). 

 Dr. 0. Livingstone (C). 



1. 



Ad. 



L. Bangwelu. 



2. 



Yg. 



Kazungula, Upper Zambesi 



3- 



-5. Ad. 



Kafue R., „ 



6. 



Yfi. 



Rovunia R. 



19. GNATHONEMUS RICTUS. 



llormyrus, sp. n., Heuglin, Sitzb. Ak. Wien, ix. 1852, p. 920, pi. lx. fig. 1. 

 Petroceplialns pidus, Marcusen, Mem. Ac. St. Petersb. (7) vii. 1864, p. 153. 

 GnatJionenms piciw, Bouleng. Ann. & Mag. N. H. (7) xvi. 1905, p. 38, and Fish. 

 Nile, p. 48, pi. vii. fig. 2 (1907). 



Depth of body 3|- times in total length, length of head 5 times. 

 Head as long as deep, with curved upper profile ; snout | length of 



Fig. 92. 



GnatJionemus pidus. 

 Fashoda (F. N.). f. 



head ; teeth bicuspid, 5 in upper jaw, 6 in lower ; a slight swelling 

 of the chin ; eye rather large, equal to length of snout, f interorbital 

 vol. l. I 



