478 



Annals of the South African Museum. 



(a) Caudal peduncle as long as deep ; 4 series of scales on the cheek ; 



-") gill-rakers. 



D. xvi-xvii 13 ; A. iii 11 ; So. 31- 



33 r|; caudal rounded . . 1. T. kafuensis, Blgr. 



(b) Caudal peduncle as long as deep, rarely a little deeper than long ; 



2 or 3 series of scales on the cheek ; 15-23 gill-rakers ; pectoral 

 xisually not much longer than head. 



D. xvi 12-13; A. iii 11; Sc. 31 T % ; 

 mouth moderate, about width 

 of head, extending to behind 

 nostril ; caudal truncate . 



2. T. intermedia, n. sp. 



I>. xv-xvi 10-12: A. iii (iv) 9-10; 

 Sc. 28-33 j|^| ; mouth large, at 



least about ~ width of head, 

 extending to below eye, or not 

 quite so far ; caudal rounded in 

 the adult 



D. xv-xvi 11-13; A. iii 10; Sc. 



> 1 



28-31 j| ; mouth large, extend- 

 ing to anterior border of eye (or 

 nearly so) or a little beyond ; 

 caudal truncate 



D. xv-xviii 10-12; A. iii 9-11; 

 Sc. 27-34 j* 'j! ; mouth fj to f 



width of head, extending to 

 between nostril and eye ; caudal 

 truncate or slightly emarginate 

 (angles sometimes rounded) 



3. T. mossambica, Peters. 



4. T. vorax, Pfeff. 



5. T. natalensis, M. Web. 



(c) Caudal peduncle deeper than long; 2 or 3 series of scales on the 

 cheek ; 15-25 gill rakers ; pectoral often much longer than head 

 in adult. 



D. xv-xvi 11-13; A. iii 9-10; Sc. 

 29-31 13 r[^ ; caudal truncate or 



slightly emarginate . 



D. xvii 12; A. iii 9; Sc. 28 -; 

 caudal truncate or slightly 



6. T. macrochir, Blgr. 



emarginate 



7. T. shesliekensis, n. sp. 



(2) Outer teeth with extremely slender shafts, sometimes almost seti- 

 form ; 2 or 3 series of scales on the cheek ; caudal truncate or 

 slightly emarginate. 



