. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). British Museum (Natural History); Fishes; Freshwater animals. 282 ADDENDA, VOL. IT. 7 a. OLARIAS NGAMENSIS. Casteln. Mem. Poiss. Afr. Austr. p. 63 (1861) ; Bouleng. Tr. Zool. Soc. xviii. 1911, p. 404, pi. xxxviii. fig. 2 ; Gilclir. & Thouips. Ann. S. Afr. Mus. xi. 1913, p. 443. Depth of body 6§ times in total length, length of head 3 times. Head If times as long as broad, smooth above (young); occipital process angular ; frontal fontanelle 3- length of head; occipital fontanelle small, in advance of oc
. Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History). British Museum (Natural History); Fishes; Freshwater animals. 282 ADDENDA, VOL. IT. 7 a. OLARIAS NGAMENSIS. Casteln. Mem. Poiss. Afr. Austr. p. 63 (1861) ; Bouleng. Tr. Zool. Soc. xviii. 1911, p. 404, pi. xxxviii. fig. 2 ; Gilclir. & Thouips. Ann. S. Afr. Mus. xi. 1913, p. 443. Depth of body 6§ times in total length, length of head 3 times. Head If times as long as broad, smooth above (young); occipital process angular ; frontal fontanelle 3- length of head; occipital fontanelle small, in advance of occipital process ; eye 3 times in length of snout, 5 times in interorbital width, which equals width of mouth and f length Fig. Clarias ngamensis. Okovango E. (Tr. Z. S. 1911). \. of head ; band of prsemaxillary teeth 4 times as long as broad ; vomerine teeth granular, forming a crescentic band which, in the middle, is nearly twice as broad as the prsemaxillary band ; anterior mandibular teeth pointed, posterior granular. Nasal barbel \ length of head, maxillary f, reaching middle of pectoral spine, outer mandibular f, inner mandibular \. Gill-rakers long, about 30 on anterior arch. Clavicles striated, distinct under the thin skin. Dorsal 60, its distance from occipital process \ length of head, its distance from caudal fin \. Anal 50, narrowly separated from caudal. Pectoral not quite \ length of head, its spine serrated on the outer border and § the length of the fin. Ventral equally distant from end of snout and. 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 : Sold by Longmans & Co. , B. Quaritch, Dulau & Co. , and at the British Museum (Natural History)
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