. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). British Museum (Natural History); Fishes; Freshwater animals. T1LAPIA. 247 78. TILAPIA POLYACANTHUS. Bouleng. Ann. Mus. Congo, Zool. i. p. 124, pi. xlv. fig. 6 (1899), and Poiss. Bass. Congo, p. 471 (1901) ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 326. Depth of body nearly equal to length of head, 3 to 3i times in total length. Occiput somewhat humped in the male. Snout with straight or convex upper profile, as long as postocular part of head ; eye 3§ to 4 times in length of head, equal to interorbi
. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). British Museum (Natural History); Fishes; Freshwater animals. T1LAPIA. 247 78. TILAPIA POLYACANTHUS. Bouleng. Ann. Mus. Congo, Zool. i. p. 124, pi. xlv. fig. 6 (1899), and Poiss. Bass. Congo, p. 471 (1901) ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 326. Depth of body nearly equal to length of head, 3 to 3i times in total length. Occiput somewhat humped in the male. Snout with straight or convex upper profile, as long as postocular part of head ; eye 3§ to 4 times in length of head, equal to interorbital width and to praeorbital depth ; mouth § to |- width of head, extending to between nostril and eye; upper lip much developed on the side; teeth in 5 or 6 series, outer rather large, 44 to 50 in upper jaw ; 3 or 4 series of scales on the cheek, width of scaly part equal to diameter of eye. Gill-rakers short, 9 or 10 on lower part of anterior arch. Dorsal XVIII-X1X 8-9 ; spines subequal from the fifth or sixth, ^ to f length of head ; longest Fig. Tilapia poly acanthus. Type ( C). f. soft rays -f to i length of head. Anal III 7-8 ; third spine a little longer than longest dorsal. Pectoral § to f length of head, not extend- ing to vertical of origin of anal. Ventral not reaching vent. Caudal rounded. Caudal peduncle as long as deep or a little longer than deep. ^-4 • ^ 24 Scales denticulate, 32-34 -jt= ; lateral lines ~§zy>- Dark olive-brown; ^ill-cover, dorsal, anal, and caudal fins edged with blackish; ventrals blackish. Total length 80 millim. Lake Mweru.—Type in Congo Museum, Tervueren. 1-3. Ad. & yg. Pweto, L. Mweru. Dr. L. Stappers (0.). 79. TILAPIA Bouleng. Ann. & Mag. N. H. (7) vii. 1901, p. 4, Poiss. Bass. Congo, p. 474 (1901). and Tr. Zool. Soc. xvi. 1901, p. 157, pi. xviii. fig. 4 ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. Please note that these images are extracted from scanned page images that may have been di
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