CYPRINIM. 
119 
thrice and one-third in the total length (without caudal). Head thick, short, with the 
snout obtuse, the lower jaw projecting beyond the upper. Diameter of the eye about 
equal to the extent of the snout, one-half of the interorbital space, and two-ninths of 
the length of the head. The origin of the dorsal fin is midway between the root of the 
caudal and the eye in males, and equidistant between the root of the caudal and the 
prseoperculum in females. The origin of the anal is opposite to that of the dorsal in 
males, and somewhat more backwards in females, in which, besides, the anterior anal 
rays are stiff and inflexible. The male has the vertical fins and the pectorals much 
more elongate than the females. 
Colour in spirits. — Males have all the scales provided with a more or less broad 
carmine-red margin ; sides of the head, dorsal, and anal fin with similarly coloured 
spots; caudal entirely red. Females have the tail and base of the anal and caudal 
dotted with black. 
Colour in life . — Males [251]. Snout yellow, body opalescent, each scale with a 
carmine-red margin ; these are darker and broader behind the origin of the dorsal and 
on the shoulder, where they assume the appearance of a red patch. Dorsal with bands 
of reddish brown, much broader than the interspaces between them ; upper part 
blackish ; margin white. Anal yellow, with bands similar to those on dorsal. Tail 
and caudal red, the latter with a black margin. Pectorals yellow, with white margins. 
Two to four inches in length. 
Wells at Zanzibar. Pangani river. Streams at Seychelles. Quillimane. 
It is remarkable that out of many hundred specimens observed by Colonel Playfair 
at Zanzibar, Pangani, and Seychelles, no female was ever found at the two first-named 
places, and no male at the last. 
Family CYPRINID/E. 
LABEO, Cuv. 
407. Labeo forskalii. 
Labeo forskalii, Rupp. Mas. Senck. li. p. 18, tab. 3. fig. 1 ; Heckel, in Russegger’s Reisen , ii. 3. p. 300, 
taf. 20. fig. 2. 
cylindricus, Peters, Monatsber. Akad. IViss. Bert. 1852, p. 684. 
River Rovuma. East coast of Africa. Mozambique . Nile. 
RASBORA, BleeJc. 
408. Rasbora zanzibarensis, sp. n. Plate XVII. fig. 4. 
D. 9. A. 8. L. lat. 33. L. transv. 5^/4. 
Dorsal fin inserted behind the ventrals, but in front of the anal. Body compressed, 
rather elongate, its greatest depth being equal to the length of the head, which is two- 
