LEUCISCUS UKLIVA. l(j? 



The ventral fins begin half-way down the body. The dorsal commences 

 opposite to the middle of the base of the ventral ; it is truncate behind. Its 

 longest rays are almost as long as those of the caudal fin, which exceed the 

 length of the head. The anal tin is lower than the dorsal, and nearly as long 

 as high. 



The scales are rather large, being from three-quarters to four-fifths of the 

 diameter of the eye; the free margin has a fan of from six to ten rays ; and 

 they are marked with fine concentric striping. Their borders show an edging 

 of black pigment, as in L. illyricus ; but, owing to the larger size of the 

 scales, it forms a network with wider meshes. There are more longitudinal 

 rows of scales between the lateral line and ventral fin. The colour is known 

 only from specimens in spirit; the back is dark steel-blue, and the sides, 

 according to Dr. Giinther, are of shining silver. The fins are transparent. 

 The species is found in the River Narenta and a lake near Vergoraz. The 

 pharyngeal teeth are hooked and slightly denticulated, and are arranged in 

 t\vo rows, with the formula 5 2, 2 5. 



Leuciscus ukliva (HECKEL). 

 D. 1011, A. 1112. Scales : lat. line 6260, transverse 119. 



This small fish (Fig. 91) is about six inches long, and has been caught 

 hitherto only in the River Cettina at Sign, in Dalmatia. Its head is short and 



Fig. 91. LEUCISCUS UKLIVA (HECKEL). 



thick, with the nose arched, and projecting slightly over the small mouth. A 

 narrow black band runs along each side, above the lateral line. 



The fish is five and a half times as long as the head; but the height 

 of the body is only five-sixths of the length of the head, and in the tail 

 the height is diminished to one-third of this amount ; the width at the 



