The Freshwater Fidies of ftouth Africa. 



539 



specimen, truncate apparently) ; caudal peduncle l times as deep as 



long. Scales cycloid or feebly denticulate, 34 ^ ; latei-al lines % . 



Colour (of preserved specimen) dark brown above, lighter beneath ; 

 scales lighter in the centre, forming indistinct longitudinal streaks 

 following the series of scales ; faint, very indistinct dark patches or 

 cross-bars on body ; a dark opei'cular spot ; dorsal with indistinct 

 dark and light streaks ; anal light in centre with some indistinct 

 orange markings near outer border. 



One specimen, 277 mm. in length, from Sawmills, Bulawayo, 

 Rhodesia (Mr. F. D. McKean). 



\ 



4. PELMATOCHROMIS NGAMENSIS, n. sp. 



Teeth, an outer row of small conical teeth with swollen bases, about 

 40 on upper jaw, with an inner series of small, irregularly placed teeth 



FIG. 155. Pelmatochromis ngamensis. Type. -i. 



some distance behind them. Depth of body 2| times in length of 

 head excluding caudal, length of head 3 times. Head 1 T 7 ^ times as 

 long as broad, upper profile rounded, concave before the eyes ; snout 

 rounded, with straight upper profile, as long as broad, shorter than 

 postocular part of head ; eye 6 T 7 ^ times in length of head, If times in 

 interorbital width, nearly f least depth of preorbital ; width of mouth 

 a little more than f width of head, maxillary reaching to below middle 

 or anterior third of eye ; 7 or 8 series of scales on the cheek, 



