530 



CTPEINID.E. 



little more than half, length of head ; eye small, supero-lateral, 5| to 8 

 times in length of head (4 or 5 times in very young) ; interorbital width 

 f to I length of head ; width of mouth f to f length of head ; lips 

 strongly developed, upper straight-edged, lower more or less expanded 

 and bordered in front by a fringe of papillae, the posterior border being 

 more or less distinctly festooned ; inner surface of lips with small papillae 

 forming numerous transverse plicae; rostral flap large, completely 



Fig. 248. 



.^^^ 



ISf^^^"^^'- 



Laheo forsJcalii. 

 Upper Nile (E. N.). i. 



detached at the sides, its edge entire or more or less distinctly festooned ; 

 a minute barbel, concealed under folds of skin ; horny tubercles on the 

 snout, or their crater-like scars, much developed in adult, more so in 

 males than in females. Dorsal III 10 (rarely 9 or 11) rays, equally 

 distant from end of snout or nostrils and from caudal, upper edge concave, 

 last simple ray and first branched ray more or less produced in males ; 

 except in very young and certain female specimens, longest rays more or 

 less considerably exceeding length of head. Anal III 5, shorter than 

 head, often reaching root of caudal. Pectoral nearly as long as 

 head, not reaching ventral, the first ray of which falls below 4th or 5th 

 branched ray of dorsal. Caudal deeply emarginate, crescentic when 

 fully spread out. Caudal peduncle 1^ to IJ times as long as deep. 

 Scales 38-42 i=t-oI, 4-5 between lateral line and root of ventral, 16 

 (rarely 18) round caudal peduncle. Dark olive above and on the sides, 

 white beneath ; scales on the sides often pink in the centre ; fins dark 

 grey, first ray of pectoral, ventral, and anal often yellowish. 



Total length 360 millim. 



Lower Nile to upper tributaries of Blue Nile. 



