. Catalogue of the fresh-water fishes of Africa in the British museum (Natural history) ... Fishes; Freshwater animals. 272 4. PETROCHROMIS Bouleng. Ann. & Mag. X. H. (7) x. 1902, p. 70 ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 352. Depth of body 2J times in total length, length of head 3 times. Head 1| times as long as broad; snont much broader than long, 1^ times as Jong as eye, which is 4 times in length of head and ]f times in interorbital widrh; mouth extending to between nostril and eye, upper lip very thick ; 4 series of scales on the cheek. Gill-rakers ve
. Catalogue of the fresh-water fishes of Africa in the British museum (Natural history) ... Fishes; Freshwater animals. 272 4. PETROCHROMIS Bouleng. Ann. & Mag. X. H. (7) x. 1902, p. 70 ; Pellegr. Mem. Soc. Zool. France, xvi. 1904, p. 352. Depth of body 2J times in total length, length of head 3 times. Head 1| times as long as broad; snont much broader than long, 1^ times as Jong as eye, which is 4 times in length of head and ]f times in interorbital widrh; mouth extending to between nostril and eye, upper lip very thick ; 4 series of scales on the cheek. Gill-rakers very sliort, 13 on lower part of anterior arch. Dorsal XIX 8 : spines increasing in length to the seventh, which measures about J length Fig. Petrochromis nyasste. Type. of head ; longest soft rays as long as head. An;il III 7 ; third spine thicker but a little shorter than longest dorsal. Tectoral a little longer than head, nearly reaching origin of anal. Ventral produced, extending beyond origin of anal. Caudal truncate, slightly emarginate. Caudal peduncle as long as deep. Scales feebly denticulate, very minute on breast and belly, 35 \j ; lateral lines J|. Olive-brown ; a black opercular spot. Total length lS-5 millim. Lake Nyassa. 1- ^>P*^- L. Xja,.sa. 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, George Albert, 1858-1937. London, Printed by order of the Trustees [by Taylor and Francis]
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