502 Annals of the South African Museum. 



of scaly part f- diameter of eye. Grill-rakers short, 10 on lower part of 

 anterior arch. 



Dorsal xiv 10 ; spines subequal from 6th ; longest spine f length of 

 head ; longest soft rays \ length of head. Pectoral f length of head, 

 reaching to vent. Ventral reaching to vent. Anal iii 6 ; 3rd spine \~ 

 times as long as longest dorsal spine. Caudal truncate; caudal 

 peduncle If times as long as deep. Scales cycloid, 29,}, lateral 

 lines \~ . 



Colour (of preserved specimen) light brown, darker above than 

 below, faint cross-bars on body ; an interrupted dark lateral band from 

 eye to root of caudal ; a shorter dark streak along upper lateral line to 

 below posterior end of soft dorsal ; a dark opercular spot ; a faint dark 

 bar from eye to angle of mouth and to chin ; dorsal and caudal fins 

 with dark and light spots. 



One specimen, 61 mm. in length, from Victoria Falls, Zambesi River 

 (F. Rumsay). Bulawayo Museum. 



18. TILAPIA SPARRMANI, A. Smith. 



Tilapia sparrmani, A. Smith, 111. Zool. S. Air., Pisces, pi. v (1849) ; 

 Bouleng., Proc. Zool. Soc., 1899, p. 119, Pois. Bass. Congo., p. 462 

 (1901), Trans. Zool. Soc., xviii, 1911, p. 417, and Freshw. Fish. Africa, 

 iii, p. 206, fig. 132 (1915) ; Pellegr. M.'m. Soc. Zool. France, xvi, 1904, 

 p. 319. 



Chromis sparmanni, G-iinth., Cat. Fish., iv, p. 269 (1862). 



Chromis niloticus, part., Peters, Reise Mossamb., iv, p. 23 (1868). 



Tilapia fouloni, Bouleng., Ann. and Mag. Nat Hist. (7), xvi, 1905, 

 p. 647. 



Teeth small, in 3 to 6 series, 40 (young) to 80 in outer series of 

 upper jaw. Depth of body 2J to 2f times in total length excluding 

 caudal, length of head 3 to 3| times. Head 1^ to nearly twice as long 

 as broad ; snout with straight or slightly concave upper profile, a 

 little broader than long, as long as or a little longer than eye, f to * 

 postocular part of head ; eye 3f to 4 times in length of head, T 7 y to 

 ^ interorbital width, equal to or a little more than depth of preorbital ; 

 mouth moderate, -*- to f length of head, extending to between nostril 

 and eye ; 2 or 3 series of scales on the cheek, depth of scaly part -| to 

 diameter of eye. Gill-rakers short, 9 to 12 on lower part of anterior 

 arch. 



Dorsal xiii-xv 9-11 ; last spine longest, v, to -f length of head ; 

 longest soft rays f to |- length of head. Pectoral f to nearly equal to 

 length of head, not i-eachiug anal. Ventral reaching to vent or to 



