174 CYPE1NIJXZE. 



4. LABEO VICTORTANUS. 

 (Plate XXXII. fig. 1.) 



Boulenger, Proe. Zool. Soc. 1901, ii. p. 159. 



Labeo forskalii (non Riippell), Hilgendorf, Sitzb. Ges. naturf. Fr. Berl. 1888, p. 78. 



Body compressed, its depth equal to or a little greater than the length of the head 

 and contained four to four and three-fourths times in the total length. Head about 

 once and a half or once and two-thirds as long as broad; snout rounded, with small 

 horny warts in the adult, its length about one-third to two-fifths that of the head; 

 eye perfectly lateral, in the middle or a little anterior to the middle of the head, 

 its diameter five (young) to six and two-thirds times in the length of the head ; 

 interorbital width one-half to three-fifths the length of the head ; mouth strongly 

 arched, its width about one-third to two-fifths the length of the head ; lips not 

 distinctly fringed on the edge, with small papillae forming transverse plicae on the 

 inner side ; rostral flap moderately large, with entire edge ; a minute barbel in the 

 corner of the mouth, hidden under the folds of the mouth. Dorsal fin composed of 

 III 9-10 rays, equally distant from the end of the snout and the root of the caudal, 

 or a little nearer the latter, its upper edge strongly concave, the last simple ray 

 longest and nearly as long as the head. Anal fin with HI 5 rays, with straight or 

 notched border, its longest ray two-thirds to four-fifths the length of the head, not 

 reaching the root of the caudal. Pectoral fin subfalciform, three-fourths or nearly as 

 long as the head, not reaching the ventral, the first ray of which falls below the fourth 

 or fifth branched ray of the dorsal. Caudal fin deeply emarginate, crescentic when 

 fully spread out. Caudal peduncle about once and a half as long as deep. Scales finely 

 striated longitudinally, 38-39 ^r, 4|-5 between the lateral line and the base of the 

 ventral, 16 or 18 round the caudal peduncle. 



Colours in life olive or dark steel-grey above, whitish beneath ; fins greyish, dorsal 

 sometimes yellow at the base, dorsal, anal, and ventral sometimes tinged with orange ; 

 a more or less distinct black spot behind the upper part of the gill-cover. 



Total length 325 millimetres. 



This species inhabits Lake Victoria. The first specimens brought to the Berlin 

 Museum by the late Dr. G. A. Fischer were referred by Hilgendorf to L. forskalii*. 

 The following specimens have been examined by me : — 



3 L. Victoria. — Sir Harry Johnston, 1900. (Types.) 



1 L. Victoria.— Dr. G. A. Fischer, 1884 (Berlin Museum). 



* One of which has been sent to me on loan by my regretted colleague Prof. Hilgendorf. 



