Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . om head. Anal 25-29, a littlenearer base of ventrals than base of caudal. Pectoral pointed, § lengthof head, nearly twice as long as ventral and extending beyond base oflatter. Caudal with pointed lobes. Caudal peduncle hardly more thantwice as long as deep, |- length of head. 35-38 scales in lateral line, PETROCEPHALUS. 57 j3 in transverse series on body, -g in transverse series between dorsal andanal, 12 round caudal peduncle. Silvery, back dark brown. Total length 85 inillim. Kingani River, East Africa.
Catalogue of the fresh-water fishes of Africa in the British Museum (Natural History) . om head. Anal 25-29, a littlenearer base of ventrals than base of caudal. Pectoral pointed, § lengthof head, nearly twice as long as ventral and extending beyond base oflatter. Caudal with pointed lobes. Caudal peduncle hardly more thantwice as long as deep, |- length of head. 35-38 scales in lateral line, PETROCEPHALUS. 57 j3 in transverse series on body, -g in transverse series between dorsal andanal, 12 round caudal peduncle. Silvery, back dark brown. Total length 85 inillim. Kingani River, East Africa. 1. Type. Kingani R. Dr. Stuhlmann (C); Berlin Museum (E. ). 9. PETROCEPHALUS CATOSTOMA. Mormyrus catostoma, Giinth. Cat. Fish. vi. p. 222 (1866).Petrocephalus catostoma, Bouleng. Proc. Zool. Soc. 1898, p. 790. Depth of body 3 to 3^ times in total length, length of head 3^ to oftimes. Head as long as deep, with convex upper profile; snout veryshort, i length of head, rounded, projecting beyond mouth; mouthsituated below eye, its width \ length of head; teeth bicuspid, 12-11 Pi-. Petrocephalus in upper jaw, 18-20 in lower; eye large, at least as long as snout, atleast f interorbital width. Dorsal 20-22, originating above 4th or 5thray of anal, its length hardly half its distance from head. Anal 25-29,equally distant from base of ventral and from base of caudal. Pectoralpointed, nearly f length of head, twice as long as ventral, and extendingbeyond base of latter. Caudal with pointed lobes. Caudal peduncle 2\to 3 times as long as deep, a little shorter than head. 37-40 scales inlateral line, ^^ in transverse series on body, ^j in transverse seriesbetween dorsal and anal, 16 round caudal peduncle. Silvery, backblackish. Total length 55 millim. Rovuma River and Lake Nyassa. 1-5. Types. Rovuma River. Dr. C. Livingstone (P.). 6. Ad. Between Kondowe and Karonga, Sir H. H. Johnston (P.). N. of L. Nyassa. 58 MOKMYRIDJS. 10. PETEOCBPHALUS gliroides
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