African Species of the Genus Labeo. 357 
2. Eyes supero-lateral, entirely or nearly entirely visible from above. 
a. Dorsal with 11-12 branched rays, 
equally distant from eye and from 
caudal; depth of body about 3 
times in total length; caudal 
peduncle as long as deep; 
Sq. 35-38 a CIE Ornts eee ee 16. LZ. cyclorhynchus, Bley. 
b. Dorsal with 8-11 branched rays, 
nearer eye than caudal; depth of 
body usually more than 3 times 
in total length. 
a, 20-22 scales round caudal peduncle. 
Caudal peduncle deeper than long; Sq. 39 
PE OR BE oe cencawea: 17. L. faleapinnis, Blgr. 
Caudal bedunele a little longer than deep; 
Sq. 89 2 Fay 4p 22 eee cee e eee ence eee 18. L. Kirk, Bley. 
B. 16-18 scales round caudal peduncle. 
* Caudal peduncle longer than deep; dorsal with concave 
upper edge. 
Dorsal with 10 (rarely 9 or 11) branched 
rays; eye small, its diameter 53 to 8 times 
a 
in length of head; Sq. 38-42 = 4-5, 
Ge res siohats vid hore ae eNO n ...+. 19. L. Forskahi, Rupp. 
Dorsal with 8 to 10 branched rays; diameter 
of eye 4 to 7 times in length of head; 
Sq. 85-39 Ee BS AMO site gt casas 2 20. L. eylindricus, Peters, 
* Caudal peduncle as long as deep or a little deeper than 
long ; dorsal with 10 branched rays. 
Dorsal with straight or slightly notched upper 
edge in the adult ; diameter of eye 4 ve 
times in length of head ; Sq. 88-39 7 
a eM ery. estes State ctefe Des cht de ote "24: LL. macrostoma, Blgr. 
Dorsal with concave upper edge ; diameter 
of eye 7 times in length of head in adult ; 
snout pvinted, ending in a turned up ap- 
pendage; Sq. 38-39 a AP AMG Ewha are esas 22. L. nasus, Bley. 
Dorsal with concave upper edge; diameter 
of eye 4 to 53 times in length of head; 
St Oe Cea nee cere eee 23. L. Greenii, Bler. 
y. 12 scales round caudal peduncle; dorsal with 9 or 10 
branched rays. 
* Dorsal with straight or convex 
upper edge ; caudal peduncle 
not longer than deep; 
Sq. 32-34 33, 3,12 ........ 24. L. brachypoma, Gthr. 
** Dorsal with concave upper edge. 
Caudal peduncle longer than deep ; Sq. 36-89 
a SS ee teetstatee: etree raeernct Oude a .o++ 20, L, annectens, Bley. 
