23-1: CTPRIUID^E. 



28. Leuciscus muticellus. 



Ryserle, Gemer, Hist. Anim. iv. p. 497. 



Grislagine, WilliKjhby, Hist. Pise. p. 263, tab. Q. 1. fig. 1. 



Cyprinus apliya, Hartmann, Helvet. Ichth. p. 200 ; Agassiz in Isis, 



1828, p. 1048. 

 Leuciscus aphya, Agassiz, in Wiei/m. Arch. 18.38, p. 79. 

 muticellus, Bonap. Faun. Ital. Peso. ; De Filippi, Cenni Peso. 



Lombard, p. 1.3 ; Gilnth. Fische d. Neck. p. 57, c. tab. 



savignyi, Bonap. I. c. ; Cuv. ^ Val. xvii. p. 2.38, pi. 494. 



genei, Bonap. I.e.; ? Cuv. 8f Val. xvii. p. 159 *. 



conies, Costa, Faun. Nap. Pesc. p. 26, tav. 18 bis. 



agassizii, Cuv. 8f Val. xvii. p. 254, pi. 495 (descript. erroneous). 



Telestes agassizii, Heckel, Sitzgsber. Ak. Wiss. Wien, 1851, viii. p. 386 ; 



Heck. 8f Kner, Silsswasserf. p. 206. fig. 116; Siehold, Siissivasserf. 



p. 212. 



rysela, Heckel, Sitzgsber. Ak. Wiss. Wien, 1852, ix. p. 100. 



savignyi, Heck. ^~ Kner, iSiisswasserf. p. 208. fig. 117; Martens, 



Wiegm. Arch. 1857, p. 182. 

 muticellus, Canestrini, Arch. p. la Zool. etc. iii. 1864, p. 108, 



and iv. 1866, j). 113. 

 Squalius agassizii, Blanchard, Poiss. France, p. 406 (fig. not good). 



D. 10-11. A. (10) 11-12 (13). V. 9-10. L. lat. 46-60. 



L. transv. ^. Vert. ?»=^. 



5-b 19-21 



Body rather elongate, its depth being two-ninths or one-fourth 

 of the total length (without caudal) . The width of the interorbital 

 space is more than the diameter of the eye, and scarcely more than 

 one-third of the length of the head. The cleft of the mouth does 

 not quite reach the vertical from the front margin of the eye. Snout 

 more or less convex, the upper jaw overlapping the lower. Origin 

 of the dorsal fin opposite to the root of the inner ventral ray. The 

 anal fin commences at some distance behind the vertical from the 

 last dorsal raj'. There are four and a half longitudinal series of 

 scales between the lateral line and ventral fin. A more or less dis- 

 tinct dark hand along the side of the head and body, above the 

 lateral line. 



Pharyngeal teeth 5 . 2 — 2 . 4, hooked, slightly denticulated. 



Italy ; Switzerland ; tributaries of the upper Danuhe and Ehine. 



a, h-f. Adult and j-oung. River Isar (Bavaria). Presented by 



Prof. V. Siehold. 

 g. Adult: skeleton. Neckar. From Dr. A. Giinther's Collection. 

 h. Adult : skull. Neckar. From Dr. A. Giinther's Collection. 



Cyprinus chrgsojorasius, Pall. Zoogr. Ross. -As. iii. p. 318, is a fish 

 from the Crimea, cAadently closely allied to, if not identical with, 

 L. muticellus. Pallas notices the small scales, the oblong shape, the 

 lateral bands, the orange-coloured base of the paired fins, the occur- 



* I think tliere can be but little doubt as regards the identity of the fish 

 figured by Bonaparte as L. genei with his muticeUus. However, Valenciennes 

 states that the specimens examined by him have only one series of pharyngeal 

 teeth ; whether tliis statement is erroneous, or taken from specimens which are 

 not Bonaparte's L. genei, cannot be determined without reexamination of the 

 examples in the Paris Museum. 



