PAEATILAPIA. 



355 



XV 12-13 ; spines increasing in length to the last, which is -| length of 

 head ; longest soft rays nearly as long as head. Anal III 10 ; third 

 spine | length of head. Pectoral as long as head, reaching vertical of 

 origin of anal. Ventral reaching beyond origin of anal. Caudal 

 rounded. Caudal peduncle as long as deep or a little deeper than long. 

 Scales cycloid, 31-33 jf; lateral lines fj^. Olive above, pale green 

 beneath, with a purplish-brown bar at the base of the scales ; pectorals 



Fig. 240. 



^3^%?%^^' v 



Paratilapia gibbiceps. 

 Type (Tr. Z. S. 1911). §. 



pale olive, ventrals dark olive ; dorsal, anal, and caudal greyish ; dorsal 

 edged with red, the soft part with regular series of round purplish- 

 brown spots ; similar spots on the caudal ; anal with round pink spots. 



Total length 200 millim. 



Lake Ngami Basin. 

 1-2. Types. Okovango B. R. B. Woosnam, Esq. (C). 



37. PARATILAPIA FREDERICI. 



Chromys frederici, Oasteln. Mem. Poiss. Afr. Ausrr. p. 15 (1861). 

 Chromidotilapia (?) frederici, Bouleng. Proc. Zool. Soc. 1898, p. 151. 

 Paratilapia frederici, Bouleng. Tr. Zool. Soc. xviii. 1911, p. 409, pi. xxxix. fig. 1. 



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

 Head twice, or a little over twice, as long as broad, upper profile slightly 



