C)'.]. chondkostomA. 273 



2. Chondrostoma soetta. 



Savetta. 



Siu^ta, Bella?!. De Aqtuit. p. 315. 



Chondrostoma nasus, Naccari, Ittiol. Adr. p. 413 ; De Filiirpi, Cemii, 



p. 10. 



soetta (ryzela), Boiiap. Faun. Ital. Penc. 



seva, Cuv. ^- Val. xvii. p. 39G. 



Chondrocliylus nasicus (!), Hcckel^ in Iti(sseffc/er.s Reirien, i. p. 1031, 



and ii. 3." p. 289*. 

 Chondrostoma soetta, Hecl;d S) Knet\ Siisstvasserf. p. 221. fig. 128: 



Cane4rim, Archiv. Zool. Anat. etc. iv. 180G, p. 122. 



D. 12. A. 14-15. L. lat. 57-60. L. transv. 9/8. Vert. 44. 



The height of the body is one-fourth or rather more than one- 

 fourth of the total length (without caudal), the length of the head 

 one-fifth. Snout not much projecting beyond the mouth, the cleft 

 of which is somewhat arched. Pharyngeal teeth 7 or 6 — 6 or 7. 

 Four and a half longitudinal series of scales between the lateral line 

 and ventral fin. Pectoral fin of moderate length, two-thirds of the 

 distance of its root from the ventral extending to the 18th scale of 

 the lateral line. 



Representing Ch. nasus in rivers south of the Alps. 



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

 h-c. Half-gx'own. Eiver Kieka, Montenegro. From the Mila 

 Museum. 



3. Chondrostoma regium. 



Chondrochilus regius, Heckel, in Russeqqers Reisen, i. p. 1077, taf. 9. 



fig. .3. 

 Chondrostoma regia, ITeckel, I. c. ii. 3. pp. 278, 289. 



D. 12. A. 13-14. L. lat. G4-65. L. transv. 11/?. 



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

 the total length (without caudal), the length of the head six times. 

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

 straight in a transverse line. Pharyngeal teeth (6) 7 — 6. Pectoral 

 short, its length being two -thirds of that of the head. (Heck.) 



Rivers Orontes and Tisrris. 



4. Chondrostoma genei. 



Chondrostoma genei, Bonap. Faun. Ital. Pesc. ; Heckel, Sitzgsher. 

 Akad. Wiss. IVien, ix. 1852, p. 377. figs. 7-11 ; Heckel ^' Kner, 

 Siisstvasserf. p. 220. figs. 126 & 127 (part.) ; Siebold, Siisswasserf. 

 p. 230; Canestrini, Archiv. Zool. Anat. etc. iv. 1860, p. 124. 



jaculuni, iJe Filippi, Cenni sui pesci Waqua dolce, 1844, p. 11. 



* Heckel himself withdraws this genus and species, but he tliinks the specimen 

 is identical with Ch. genei. However, it is described by him as having 14 anal 

 rays and L. lat. GO, which sliows tliat it ought to have been referred to Ch. 

 Ko'effa. Tlie way in which tlic species of Chondrosfomn are t reatod by this author 

 illustrates well the principles l)y which he was guided in liis icbthyological 

 attempts generally. 

 VOL. VII. 



