Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . as long as deep, f length of head. 41-44 scales in lateralline, pj^jTj in transverse series on body, ^ in transverse series betweendorsal and anal, 10 or 12 round caudal peduncle. Silvery, the back andthe anterior rays of the dorsal darker. Total length 105 millim. White Nile. 1. Type. Fashoda. L. Loat, Esq. (P.). 2. Ad. Between Khartum and Sobat P. Mr. P. C, Zaphiro (C.) ; McMillan, Esq. (P.). 8. PETROCEPHALUS STUHLMAKNI, sp. n. Mormyrus catostoma (non Giinth.), Pfeffer, Thienv. , Fisehe, p. 39
Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . as long as deep, f length of head. 41-44 scales in lateralline, pj^jTj in transverse series on body, ^ in transverse series betweendorsal and anal, 10 or 12 round caudal peduncle. Silvery, the back andthe anterior rays of the dorsal darker. Total length 105 millim. White Nile. 1. Type. Fashoda. L. Loat, Esq. (P.). 2. Ad. Between Khartum and Sobat P. Mr. P. C, Zaphiro (C.) ; McMillan, Esq. (P.). 8. PETROCEPHALUS STUHLMAKNI, sp. n. Mormyrus catostoma (non Giinth.), Pfeffer, Thienv. , Fisehe, p. 39 (1896).Petrocephalus catostoma, Pappenh. Mitth. Zool. Mus. Berl. iii. 1907, p. 344. Depth of body equal to length of head, 3J times in total slightly longer than deep, with convex upper profile; snout veryshort, 4 length of head, rounded, strongly projecting beyond mouth;mouth below eye, its width j length of head; teeth bicuspid, 12-16in upper jaw, 20-24 in lower; eye rather large, as long as snout,about f interorbital width. Dorsal 20-22, originating above 5th ray of. Petrocepluthis anal, its length hardly half its distance from head. Anal 25-29, a littlenearer base of ventrals than base of caudal. Pectoral pointed, § lengthof head, nearly twice as long as ventral and extending beyond base oflatter. Caudal with pointed lobes. Caudal peduncle hardly more thantwice as long as deep, |- length of head. 35-38 scales in lateral line, PETROCEPHALUS. 57 j3 in transverse series on body, -g in transverse series between dorsal andanal, 12 round caudal peduncle. Silvery, back dark brown. Total length 85 inillim. Kingani River, East Africa. 1. Type. Kingani R. Dr. Stuhlmann (C); Berlin Museum (E. ). 9. PETROCEPHALUS CATOSTOMA. Mormyrus catostoma, Giinth. Cat. Fish. vi. p. 222 (1866).Petrocephalus catostoma, Bouleng. Proc. Zool. Soc. 1898, p. 790. Depth of body 3 to 3^ times in total length, length of head 3^ to oftimes. Head as long as deep, with convex uppe
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