260 
TEAVELS IN CENTEAL AFEICA. 
longest. Body_, and especially the tail^ compressed^ oblong, its 
depth being contained thrice and two-thirds or four times in the 
total length (without caudal) . Coloration uniform. 
Very common in all parts of the river; eaten by the Arabs; 
attains to a length of eighteen inches. 
Labeo coubie, Riipp. {Coubie.) 
D. 14 — 16. A. 8. L. lat. 35 — 37. L. transv. 6|/6. 
Mouth of moderate width. Lips moderately thick, with a dis- 
tinct inner fold in their entire circumference ; lower lip sometimes 
indistinctly fringed. Snout rather produced, obtuse in front, 
moderately projecting beyond the lower jaw, with a distinct lobe 
on each side ; maxillary barbel very small, hidden in a deep lateral 
groove. Eye rather small, as large as a scale in middle-sized speci- 
mens, though comparatively smaller in large ones; it is situated 
behind the middle of the length of the head in adult examples^ and 
in the middle in younger ones. There are four or five longitudinal 
series of scales between the lateral line and the ventral fin. Upper 
margin of the dorsal fin convex, the middle rays being the longest, 
and certain (male ?) specimens having this fin considerably elevated. 
Body, and especially the tail, compressed and elevated, the greatest 
depth of the body being contained thrice and one-third or thrice 
and one-fourth in the total (without caudal) . Coloration uniform. 
Snout of certain specimens with small concave tubercles. 
Attains to a length of twelve inches. 
Labeo forskalii, Biipp. 
D. 13. A. 8. L. lat. 39 — 40. L. transv. 6 6. 
Mouth broad. Lips very thick, with a distinct inner fold in 
