. Bulletin of the British Museum (Natural History). 198 A REVISION OF CERTAIN B A R B U S SPECIES FROM AFRICA Length of last unbranched dorsal ray 26-6-31-o (M = 28-0) ; distance from snout tip to dorsal origin 47-8-52-3 {M = 49-5) ; length of pectoral fin i87-25-4. Caudal peduncle length 20-3-26-2 {M = 23-2), its depth ii-4-i4-o (M = 13-5). Lateral line with a distinct downward bend from its origin to about the tenth scale, thereafter it rises abruptly to a midlateral position. There are 25 (), 26 () or 27 () scales in the lateral line (Groenewald, op. cit. gives 27-28 as the range f
. Bulletin of the British Museum (Natural History). 198 A REVISION OF CERTAIN B A R B U S SPECIES FROM AFRICA Length of last unbranched dorsal ray 26-6-31-o (M = 28-0) ; distance from snout tip to dorsal origin 47-8-52-3 {M = 49-5) ; length of pectoral fin i87-25-4. Caudal peduncle length 20-3-26-2 {M = 23-2), its depth ii-4-i4-o (M = 13-5). Lateral line with a distinct downward bend from its origin to about the tenth scale, thereafter it rises abruptly to a midlateral position. There are 25 (), 26 () or 27 () scales in the lateral line (Groenewald, op. cit. gives 27-28 as the range for South African specimens) ; 3^ scales between the lateral line and the dorsal origin, 2 or 2^ (less frequently 3) between the lateral line and the pelvic origin (Herre, op. cit. gives 3^ scales in the transverse series below the lateral Une ; but for the count used in this paper there are 2 or 2\ scales in the paratypes I have examined), 12-14 scales around the caudal peduncle and 9 or 10 (less frequently 8) in the predorsal Fig. 14. Barbus (Beirabarbus) doggetti, holotype, slightly less than natural size (from Boulenger, Fish. Nile). Dorsal fin origin above or slightly behind that of the pelvics, the fin with 3 or 4/8 rays, the last unbranched ray flexible and not enlarged. Anal fin with 3/5 rays. Coloration. Most of the specimens I have examined were probably fixed in formol ; the only specimen definitely not so treated is the holotype of B. doggetti, which does show certain differences in coloration and is described separately (see also p. 201). Ground colour brownish to greyish-white ; scales above the lateral line series with dark, lunate centres (of variable intensity) and a very faint dark outUne. A dark midlateral streak originates on the snout, passes through the eye, across the opercu- lum and continues along the flank to the caudal origin ; this band is of variable intensity and its margins are somewhat blurred in the abdominal region, where it is broadest. T
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