TILAPIA. 



209 



and with dark and light spots, or with black streaks ; outer ventral rays 

 black or blackish. 



Total length 100 millim. 



Angola. Bechuanaland, Rhodesia, Katanga, Lake Bangwelu. — Type 

 in Menna Museum. 



Tier. 133. 



Tilapia ovalis 

 L. Bans^welu. 



1. Y<T. 



2-3. Hgr. 



4-5. VTg. 



6-10. Ad., hgr., 



& yg. 



( 'hiringa, N.W. Rhodesia. 

 Lofoi, Katanga. 

 L. Dilolo, Katanga. 

 L. Bangwelu. 



Franklin Wh'ite, Esq. (P. 

 Capt. Leniaire (C). 



F. H. Mellaud, Esq. (P.). 



43. TILAPIA STEINDACHNEIU. 

 Bouleng. Ann. & Mag. N. H. (8) xii. 1913, p. 483. 



Depth of body nearly equal to length of head, 2^- to 3 times in total 

 length. Head a little more than twice as long as broad ; snout with 

 convex upper profile, as long as broad or a little longer than broad, as 

 long as postocular part of head ; eye 3f (young) to 4^, times in length 

 of head, equal to interorbital width or suborbital depth ; mouth 

 moderate, about | width of head, extending to between nostril and eye ; 

 teeth small, in 3 series, 40 to 60 in outer row of upper jaw ; 4 series of 

 scales on the cheek, width of scaly part equal to or a little less than 

 diameter of eye. Gill-rakers short, 12 to 14 on lower part of anterior 

 arch. Dorsal XIV-XV 12-13; spines equal in length from the sixth 

 or seventh, ^ to not quite ^ length of head ; longest soft rays about h 

 length of head. Anal III 8-9 ; third spine as long as and stronger 

 than last dorsal. Pectoral f to f length of head, nearly reaching 



