HAPLOCHEOMIS. 



297 



Depth of body 3 to 3J times in total length, length of head 2§ to 3 

 times. Snout with convex upper profile, as long as or a little longer 

 than eye, which is 3| to 4 times in length of head, 1 to l^ times in 

 interorbital width, and exceeds least depth of prteoibital ; lower jaw 

 ])rojecting ; maxillary extending to below anterior border of eye ; outer 

 teeth moderate or rather large, unicuspid or more or less distinctly 

 bicuspid, oG to 50 in the upper jaw, followed by 2 or 3 series of minute 

 tricuspid teeth ; 4 or 5 series of scales on the cheek, width of scaly part 

 below the eye equal to diameter of eye. Gill-rakers moderate and 

 stout, 8 or 9 on lower part of anterior arch. Dorsal XIV-XVl 8-10 ; 

 spines increasing in length to the last, which measures nearly J to y 

 length of head; longest soft rays nearly half length of head. Anal III 



Fig. 201. 



Haplochi'omis percoides. 

 Type (F. N.). 



8-9 ; third spine as long as and stronger than last dorsal. Pectoral f to | 

 length of head, not reaching vertical of origin of anal. Ventral reaching 

 vent. Caudal truncate. Caudal peduncle IJ to IJ times as long as 

 deep. Scales strongly denticulate, 31-32 ^ ; lateral lines {^_]r,- Dark 

 olive above, yellow below ; four dark brown transverse bands on the 

 body and a dark brown blotch at the base of the caudal fin ; a dark 

 brown bar across the forehead, and another, vertical, below the eye ; 

 dorsal fin light olive-brown with a darker longitudinal streak on its 

 posterior portion ; pectoral, ventral, at)d anal fins yellow, the last with 

 an orange spot with dark centre. Some specimens dark olive, with the 

 markings absent or very indistinct. 



Total length 110 millim. 



Lake Victoria and Victoria Nile. 



