. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). Fishes; Freshwater animals. 272 4. PETROCHROMIS NYASS^. Bouleng. Ann. & Mag. N. H. (7) x. 1902, p. 70 ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 352. Depth of body 2| times in total le'igth, length of head 3 times. Head 1§ times as long as broad; snout ranch broader than long, 11 times as long as eye, which is 4 times in length of head and ]§ times in interorbital widrh; month extending to between nostril and eye, upper lip very thick ; 4 series of scales on the cheek. Gill-rakers very
. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). Fishes; Freshwater animals. 272 4. PETROCHROMIS NYASS^. Bouleng. Ann. & Mag. N. H. (7) x. 1902, p. 70 ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 352. Depth of body 2| times in total le'igth, length of head 3 times. Head 1§ times as long as broad; snout ranch broader than long, 11 times as long as eye, which is 4 times in length of head and ]§ times in interorbital widrh; month extending to between nostril and eye, upper lip very thick ; 4 series of scales on the cheek. Gill-rakers very short, 13 on lower part of anterior arch. Dorsal XIX 8 ; spines increasing in length to the seventh, which measures about ^ length Fig. PetrochroDcis ni/assie. Type. of head; longest soft rays as long as head. Anal III 7; third spine thicker but a little shorter than longest dorsal. Pectoral a little longer than head, nearly reaching origin of anal. Ventral produced, extending beyond origin of anal. Caudal truncate, slightly cmarginate. Caudal peduncle as long as deep. Scales feebly denticulate, very minute on breast and belly, 35 ^- ; lateral lines j"^. Olive-brown ; a black opercular spot. Total length 185 millitn. Lake Nyassa. 1. Type. L. N Prof. J. E. S. Moore {C).. 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 British Museum (Natural History). Dept. of Zoology; Boulenger, Albert, 1858-1937. Codicote, Herts. [Eng : Wheldon and Wesley
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