56 LEUcisctrs. 229 



fin opposite to the middle of the root of the ventral. There are 

 three longitudinal series of scales between the lateral line and 

 ventral fin. Sides shining silvery, each scale dark at the base. 

 Pharj'ngeal teetu hooked, slightly denticulated, 5 . 2 — 2 . 5. 

 Dalmatia. 



a-h. Half-grown and young. lUrer Narenta. From the Milan 

 Museum. 



22. Leuciscus illyricus. 



Squalius illyricus, Heckel 8f Kner, Susstoasserf. p. 195. fig. 108. 



D. 11. A. 12. L. lat. 49-54. L. transv. ^f . 



5-4 



Body oblong, its depth being nearly one-fourth of the total length 

 (without caudal). Eye small. Mouth of moderate width ; upper 

 jaw overlapping the lower. Fins short and low. the dorsal and anal 

 not beLig higher than long ; origin of the dorsal opposite the hind 

 part of the root of the ventrals. Scales with numerous radiating 

 striae. Silvery ; margins of the scales blackish. (Heck.) 



River Isonzo, Dalmatia. 



? a-c. Young. Sign. From the Milan Museum as Leuciscus illyricus. 



23. Leuciscus spurius. 



Squalius spurius, Heckel, in Russeqgers Reisen, i. p. 1081, and ii. 8. 

 p. 227, tab. 16. tig. 3. 



D. 11. A. 13. L. lat. 50. L. transv. 10/?. 



The height of the body is about two-ninths of the total length 

 (without caudal). The diameter of the eye is rather " more than 

 one-half of the -width of the interorbital space, and two-ninths of 

 the length of the head. Mouth of moderate width, not extending 

 to the vertical from the front margin of the eye, with the jaws even 

 in front. The orirfin of the anal Jin is below the last dorsal ray. 

 Coloration uniform. (Heck.) 



Aleppo. Five inches long. 



24. Leuciscus idus. 



Der Gangling, Aland, or Nerfling. Id (Sweden). 



Capito fiuviatilis (Jeses), Gesner, Parol. C. p. 9 ; Hist. Aniin. p. 1266 ; 



JlWrofrtwr?. p. 603 ; Schwcnchfeld, Theriotr. Tp. 423; Willuyhby,^.2bQ] 



Marsil. Danub. Pan.-Mys. p. 53, tab. 18. fig. 1. 

 Cyprinus, sp., Artedi, Gen. p. 5. no. 14 ; 8pec. p. 6. no. 1 j Synon. p. 14. 



no. 30, and p. 7. no 11 ; Gronov. Zoophyl. no. 346. 

 lieuciscus, no. 13, Kkin, Pise. Miss. v. p. 68. 

 Cyprinus idus, L.Syst. Nat. p. 529; Pallas, Zooyr. Ross.- As. p. 316; 



J^kUroni, Fische v, Morko, p. 5, tab. 1 ; Fries Sf Ekstrom, Skand. 



Fisk. p. 59, tab. 11 ; Gronov. Syst. ed. Gray, p. 180. 

 jeses, L. Syst. Nat. i. p. 530 ; Block, Fische .Deutschl. i. p. 45, 



taf. 6; Meidinyer, fig. 42 ; Pertt/, in Oken's Isis, 1832, p. 719. 



idbai'us, (? L. Syst. Nat. i. p. 529) Meidinyer, fig. 41. 



microlepidotus, Ekstrom, Fische v. Morko, p. 18, tab. 2. 



Leuciscus idus, Selys-lMnych. Famie Beige, p. 209 ; YarreU, Brit. Fish. 



