500 Annals of the South African Museum. 



rounded ; caudal peduncle nearly \\ times as deep as long. Scales 

 cycloid, 29 g; lateral lines -=-.]. 



Colour (of preserved specimen) dark greyish above, whitish below, 

 scales dark at the base ; a dark opercular spot ; 4 or 5 indistinct dark 

 cross-bars on body ; indistinct dark liar across nape from opercle to 

 opercle and a faint one from eye to angle of mouth ; dorsal with dark 

 streaks and light spots ; caudal witli dark spots on upper lobe. 



One specimen, '270 mm. in length, from Sawmills, Bulawayo, 

 Rhodesia (Mr. F. D. McKean). 



15. TlLAPIA SYKESII, 11. Sp. 



Teeth in six scries, those oP the outer row enlarged and separated 

 from the inner rows by a narrow interspace ; about 50 teeth in outer 

 series on upper jaw. Depth of body 2 times in total length excluding 

 caudal, length of head 3^ times. Head If times as long as broad, 

 upper profile convex ; snout with straight upper profile, If times as 

 long as broad, a little longer than postocular part of head ; eye 5^- 

 times in length of head, a little more than i interorbital width, ;: least 

 depth of preorbital ; mouth J width of head, reaching to between 

 nostril and eye ; three series of scales on cheek, depth of scaly part 1 -{- 

 times diameter of eye. Gill-rakers short, 9 on lower part of anterior 

 arch. 



Dorsal xvi 11 ; last spine longest, nearly | length of head ; middle 

 soft rays longest, as long as head. Pectoral a little longer than head, 

 reaching to vent. Ventral reaching to vent or slightly beyond. 

 Anal iii 9; 3rd spine f\y length of head. Caudal truncate; caudal 

 peduncle 1^ times as deep as long. Scales cycloid, 30 pf, lateral 

 lines -~ . 



Colour (of preserved specimen) brown above, light yellow below, 

 scales dark at base ; a large dark opercular spot ; dorsal and caudal 

 fins with dark spots or streaks. 



One specimen, 254 mm. in length, from Zambesi River, 3 miles 

 above Victoria Falls. From Mr. F. W. Sykes, who gives the native 

 name as Apapati, which appears also to be the native name of a some- 

 what similar species, T. andersoni. 



16. TlLAPIA DRURYI, U. Sp. 



Teeth, an outer row of small bicuspid teeth, separated by a slight 

 interspace from 6 inner rows of smaller tricuspid teeth ; about 70 teeth 

 n outer series on upper jaw. Depth of body 2^ times in total length 



