274 CYrRixTD.T:. 



Clioudrorlivuclius soetta (?), Hechd in Hussef/qer's I^cisoi, i. 1031, & 

 ii. 3. p. -280. 



B. 11. A. 11. L. lat. 52-56. L. transv. 9/7. Vert. 42. 



The height of the body is contained from four times and one- 

 fourth to four times and two-thirds in the total length (without 

 caudal), the length of the head five times. Snout not mucli pro- 

 jecting beyond the mouth, the cleft of which is subsemicircular. 

 Pharyngeal teeth (6) 5 — 5. Four longitudinal series of scales between 

 the lateral line and ventral fin. Pectoral fin short, extending to the 

 13th scale of the lateral lino. 



Northern Italy ; River Ehone ; (Upper Rhine ?). 



a. Adult. Milan. Presented by Professor von Siebold. 



5. Chondrostoma knerii. 



Hfckel, hi Russec/qers Seixeii, i. p. 1030; Sitzr/sbcr. Ak. Wiss. Wie», viii. 

 1852, p. 381, taf. 13 ; Heckel Sf Kner , Siissivasserf. p. 223. fig. 129. 



Closely allied to Ch. genei. 



D. 11. A. 12. L. lat. 52-54. L. transv. 9/6. 



The height of the body is one-fourth of the total length (without 

 caudal), the length of the head two-ninths. Snout not much pro- 

 jecting beyond the mouth, the cleft of which is subsemicircular. 

 Pharyngeal teeth 6 — 6. Pive longitudinal series of scales between 

 the lateral line and ventral fin. Pectoral fins nearly as long as the 

 head, extending to the seventeenth scale of the lateral Une. 



River Narenta (Dalmatia). 



a-h. Adult. Narenta. From the Milan Museum. 



Chondrostoma mier/ii, Steindachner, Sitzgsber. Ak. Wiss. Wien, 

 1866, liii. p. 202, and liv. tab. 3, from Spain, requires further com- 

 parison "with Ch. hnerii before it can be admitted as a distinct 

 species ; it appears to have shorter pectoral fins. The author says 

 that it has the cleft of the mouth semicircular, representing it trans- 

 versely straight in the figure. 



Dr. Steindachner mentions (ibid.) a fish regarded h\ him as a 

 hybrid between Ch. miegii and Barhus rjrcellsii ; see a note on this 

 point, on Barhus hocagii, p. 92. 



6. Chondrostoma polylepis. 



Steindachner, in Sitzgshcr. Ak. Wiss. Wien, liv. 1866, p. 19, tab. 6. 

 D. 11. A. 12. L. lat. 68-75. L. transv. 12/9. 



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

 (without caudal), the length of the head one-fifth. Snout consi- 

 derably projecting beyond the mouth, the cleft of which is nearly 

 straight transversely. Pharyngeal teeth 6 or 5 — 5. Four or five 

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

 Pectoral fin of moderate length. Lateral line composed of a more or 

 less distinct series of black dots. 



Pyrenean peninsula. 



