Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . ad. 130 scales in lateral line,jp in transverse series on body, 24 round caudal peduncle. Slate-greyabove, white beneath. Total length 360 millim. Uelle River, Congo.—Type in Paris Museum. 12. MORMYRUS LONGIROSTRIS. Peters, Mon. Berl, Ac. 1852, p. 275 ; Gunth, Oat. Fish. vi. p. 216 (1866) ;Peters, Reise Mossamb. iv. p. 83, pi. xvi. fig. 2 (1868) ; Bouleng. Soc. xvii. 1906, p. 546 ; Pappenh. Mittb. Zool. Mus. Berl. iii. 1907, p. mucupe, Peters, tt. cc. pp. 275, 87, pi. xvi. fig. 1 ; Gun
Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . ad. 130 scales in lateral line,jp in transverse series on body, 24 round caudal peduncle. Slate-greyabove, white beneath. Total length 360 millim. Uelle River, Congo.—Type in Paris Museum. 12. MORMYRUS LONGIROSTRIS. Peters, Mon. Berl, Ac. 1852, p. 275 ; Gunth, Oat. Fish. vi. p. 216 (1866) ;Peters, Reise Mossamb. iv. p. 83, pi. xvi. fig. 2 (1868) ; Bouleng. Soc. xvii. 1906, p. 546 ; Pappenh. Mittb. Zool. Mus. Berl. iii. 1907, p. mucupe, Peters, tt. cc. pp. 275, 87, pi. xvi. fig. 1 ; Gunth. t. c. p. 2] longirostris, part., Bouleng. Proc. Zool. Soc. 1898, p. 817, and Poiss. Bass. Congo, p. 112 (1901).Depth of body 3| to 5 times in total length, length of head 3| to i\times. Head \\ to If times as long as deep, with curved or nearlystraight descending upper profile ; snout produced, as long as or a littleshorter than postocular part of head, its length 2 to %\ times its leastdepth ; mouth very small, lower jaw slightly projecting ; teeth small, Fig. Mormyrus , after Peters (Eeise Mossamb.). £. notched, 5 or 7 in upper jaw, 8 to 12 in lower; eye moderate,its diameter about T| times in interorbital width. Dorsal 65-75,originating in advance of ventral, 4 to 5-j times as long as anal, 1^ to 1^times as long as its distance from end of snout. Anal 17-19, originatingat nearly equal distance from base of pectoral and from of base obtusely pointed, ^ tof length of head, ventral j to \. Caudal 140 M0EMYEEDJE. with rounded or obtusely pointed lobes, densely scaled. Caudal peduncle1| to 2 times as long as deep, f to | length of head. 85-100 scales *^3—30 in lateral line, ^r^g in transverse series on the body, 40-50 in transverseseries between dorsal and anal, 22-28 round caudal peduncle. Oliveabove, whitish below. Total length 550 millim. Zambesi, Lakes Nyassa, Mweru, and Tanganyika.—Types in BerlinMuseum. 1. Ad. Ohi
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