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. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. 324 Annals of the South African Museum. Mormyrops tuckeyi, Marcusen, Bull. Ac. St. Petersb., xii., 1854, p. 14. Mormyrops deliciosus, Bouleng., Cat. Fresh. Fish. Afr., i., p. 32 (1909). " Teeth conical or truncate in the adult, more or less distinctly notched in the young, 24 to 36 in each jaw. Depth of body 5 to 6| times in total length, length of head 3| to 4J times. Head nearly twice as long as deep,upper profile slightly concave; snout rounded; jaws equal; width of mouth nearly equal to lengt
. Annals of the South African Museum. Annale van die Suid-Afrikaanse Museum. Natural history. 324 Annals of the South African Museum. Mormyrops tuckeyi, Marcusen, Bull. Ac. St. Petersb., xii., 1854, p. 14. Mormyrops deliciosus, Bouleng., Cat. Fresh. Fish. Afr., i., p. 32 (1909). " Teeth conical or truncate in the adult, more or less distinctly notched in the young, 24 to 36 in each jaw. Depth of body 5 to 6| times in total length, length of head 3| to 4J times. Head nearly twice as long as deep,upper profile slightly concave; snout rounded; jaws equal; width of mouth nearly equal to length of snout; eye small, in anterior third of head, its diameter 2 (young) to 4 times in length of snout or in interocular width. Dorsal 21-27, i to f length of anal, originating 2 to 2i- times as far from end of snout as from base of caudal. Anal 40-51, origi-. FIG. 2. — Mormyrops delicioms. nating considerably in advance of dorsal (its 12th to 16th ray corre- sponding to the first dorsal ray) and a little nearer to head than to root of caudal. Pectoral rounded, ';- to 4- length of head, ventral i to J. Caudal rather small, densely scaled, with rounded lobes; caudal peduncle 2 to 2^ times as long as deep, ^ to ^ length of head. 85-100 scales in lateral line, ^| in transverse series on body, 22-26 in transverse series between dorsal and anal, 14-18 round caudal peduncle. Colour, brownish or olive above, silvery beneath. Total length 1500 mm. Habitat : Zambezi, Lake Nyassa, Senegal, Gambia, Niger, Chad Basin, Congo, Wedi Shebeli and ; 2. PETROCEPHALUS. Petrocephalus, part., Marcusen, Bull. Ac. St. Petersb., xii., 1854, p. 14. Mormyrus, part., Giinth., Cat. Fish., vi., p. 214 (1866). Petrocephalus, Bouleng., Cat. Freshw. Fish. Afr., i., p. 47 (1909).. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original S
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