The Freshwater Fishes of South Africa. 481 



II. Scales with more or less denticulate edge. 



Caudal rounded or truncate, not at all emarginate. 



1. Dorsal with 14 or 15 spines; eye 3 to 4 times in length of head; 



depth of body 2^ to 3 times in total length ; caudal rounded or 

 rounded-subtruucate ; 6 series of scales on cheek. 



D. xv 14; A. iii 9; Sc. 34 *|; 



pectoral as long as head . . 23. T. giardi, Pellegr. 



2. Dorsal with 15-17 spines (rarely 14) ; eye 4 to 4 times in length 



of head in adult ; depth of body 2^ to 3 times in total length ; 

 caudal rounded. 



D. xiv-xvi 8-10 ; A. iii 7-8 ; Sc. 

 30-33 ^j ; teeth in |3 to 5 



series ; snout shorter than post- 

 ocular part of head . . . 24. T. calliptcra, Giinth. 



3. Dorsal with 15-17 spines; eye 3^ to 4| times in length of head; 



depth of body 2 to 3 times in total length ; caudal rounded or 

 rounded-sub truncate. 



D. xvii 9 ; A. iii 8 ; Sc. 33 =j| ; eye 



3 times in length of head ; 

 teeth in 6 series, 40 in upper 

 jaw ; caudal rounded . . 25. T. living stonii, Blgr. 



D. xvi 11; A. iii 10; Sc. 30 ~; 



eye 4 T '^ times In length of 

 head ; teeth in 4 series, about 

 50 in upper jaw ; caudal 

 rounded-subtruncate . . 26. T. kirkhami, n. sp. 



1. TlLAPIA KAFUENSIS, Blgr. 



Bouleug., Aun. aud Mag. Nat. Hist. (8), x, 1912, p. 138, and Freshw. 

 Fish. Africa, iii, p. 153, fig. 100 (1915). 



Teeth in eight series, about 110 in the outer series of upper jaw. 

 Depth of body 2 times in total length excluding caudal, length of head 

 3 times. Head If times as long as broad; snout rounded, with 

 feebly concave upper profile, slightly broader than long, a little 

 shorter than postocular part of head ; eye 5f times in length of head, 

 | interorbital width, f preorbital depth ; moiitli width of head, 

 extending to between nostril and eye ; 4 series of scales on the cheek, 

 width of scaly part a little greater than diameter of eye. Gill-rakers 

 moderate, 25 on lower part of anterior arch. 



Dorsal xvi 13 ; last spine longest, f length of head ; longest soft 

 ray | length of head. Pectoral 1| times length of head, reaching 



34 



