216 



cypi:ixiD.i5. 



? Leuciscus pagellus, Be Filippi, Vcnni, p. 14, 



scardinus, De Filippi, I. c. 



paiiperum, Dc Filippi, I. c. p. 15. 



Leucos henlei, Bomip. 



Leuciscus aula, Cuv. 8f Vol. xvii. p. 151 ; Canestrini, Arch. p. la 



Zool. etc. iv. 1866, p. 95. 



altus, Cuv. Sy- Val xvii. p. 237 (misspelling for elatus). 



Leucos aula, Hechel iy Kner, Silsswasserf. p. 162. fig. 86 ; Steindachner, 



Sitzfjsher. Ak. Wiss. IViai, 1866, liii. p. 201. 



cisalpinus, Heckel, in JRwssegger' s Reisen, i. p. 1038 (uarne only). 



rubella, Heckel Sf Kner, Silsswassei^. p. 164. fig. 87; Costa, 



Ann. Mtts. Zool. Univers. Kapol. i. p. 15. 

 basak, Heckel ^ liner, Siissivasserf. p. 166. figs. 88, 89. 



The southern representative of L. rutilus. 



D. 11-12. A. 11-12. V. 10. L. Lit. 37-46. L. transv. 8/4|. 

 Vert. 36. 

 Body generally somewhat elevated, its depth being about one- 

 third of the total length (without caudal) ; sometimes it is rather 

 higher, sometimes lower. Mouth terminal, the upper jaw but 

 slightly projecting beyond the lower. There are three longitudinal 

 series of scales between the lateral line and ventral fin. Generally 

 a greyish band along the side. Pharyngeal teeth 5 . 6 — 5. 

 Europe, south of the Alps. 



a-h. Adult. Garda Lake. Presented by Prof, von Siebold. 

 c. Adult. River Rieka (Montenegro). From the Milan Museiim. 

 d-e. Half-grown. River Narenta (Dalmatia). From the Milan 

 Museum. 



3. Leuciscus arcasii. 



Ruivaca (Portugal) ; Escalo (on the Mine). 



Leucos aula, Steindachner, Catal. prelim. Poiss. d'eau douce de Por- 

 tugal {not Ponap.). 



Ijeucos arcasii, Steindachner, Sitzgsher. Ak. Wiss. Wien, 1866, liii. 

 p. 199, and liv. p. 14, pi. 3. figs. 2 & 3. 



D. lO(-ll). A. lO(-ll). L. lat. 42-46. L. transv. ^l 

 Body oblong, its depth being less than one-third of the total 

 length (without caudal). Mouth terminal, jaws nearly even in 

 front. There are three or four longitudinal series of scales between 

 the lateral line and ventral fin. A greyish band along the side. 

 {Steincl.) 



Pharyngeal teeth 5 — 5. 

 Pyrenean peninsula. 



This fish appears to be scarcely different from L. aula. 



The same author mentions and describes a fish which he considers 

 to be a hybrid between Chondrostoma pohjlepis and Leuciscus arcasii, 

 I. c, p. , pi. 4. fig. 2. The number of scales of this supposed 

 hybrid is said to be intermediate between those of the two parent 

 fishes. 



