6. CARASSIUS. 31 



0. Several half-grown specimens. Munich. Presented by Professor 



von Siebold. 



1. Half- grown. Braunsberg, Eastern Prussia. Presented by Pro- 



fessor von Siebold. 

 K-r. Adult. Olmiitz. From Herr Jeitteles's Collection. 



Var. humilis. 

 ^-0. Young. Sicily. 



Hybrid between Cyprinus carpio and Cyprinus carassius. 

 {Carpin, Heck.) 



Cyprinus, sp., Klein, Pise. Miss. v. p. 59. no. 3. 



Cyprinus kollarii, Heckel, Ann. IFien. Mus. i. 1835, p. 223, taf. 19. 



fig. 2 ; Nordmann in Demidoff, Voi/. Huss. MMd. iii. 1840, p. 478, 



pi. 21. fig. 1 ; Cuv. (§• Val. xVi. p. 76, pi. 458. 

 striatus, Hollandre, Fuvne de la Moselle^ p. 242 ; Selys-Long- 



champs, Faune Beige, p. 198, pi. 9. 

 Carpio kollarii, Heekel i^~ Kner, Silsswasserf. p. 64 ; Kessler, Bull. 



Soc. Nat. Mosc. 1859, xxxii. pt. 1. p. 523 ; Di/boivski, Cyprin. Liv- 



lands, p. 65, taf. 5*; Siebold, Silsswasserf. p. 91. 



D. ~. A. |. L. lat. 35-38. L. transv. g. Vert. 35. 



This hybrid resembles the Carp in having four barbels, which, 

 however, are much less developed and smaller. The pharyngeal 

 teeth generally in two series (4 . 1 — 1 . 4) ; sometimes the inner 

 tooth is absent, or another tooth indicates the third series of the 

 Carp. The serrated ray of the dorsal and anal fins varies in strength, 

 being sometimes very feeble. 



This hybrid appears to occur everywhere where the Common and 

 Crucian Carps are kept in a domesticated or semidomesticated state. 



a. Fine specimen, 16 inches long. Norwich. Presented by J. H. 



Gurney, Esq. 

 h. Adult. HoUand. From Dr. Bleeker's Collection. 



c. Adult. Brunswick. Presented by Professor von Siebold. 



d. Adult. Schwandorf near Ratisbon. Presented by Professor 



von Siebold.- — (Hybrid between O. rex cyprinorum and C ca- 

 rassius.) 



2. Carassius bucephalus. 



Carassius bucephalus, Heckel, Ann. Wien. 3fus. ii. p. 157. 

 D. 3/16. A. 3/5. P. 14. V. 9. L. lat. 32. L. transv. 8/5. 

 Very similar to C. carassius, but with more series of scales above 

 the lateral line. 



Warm springs near Salonik in Macedonia. 



* Dybowski appears to have been the first who proved the hybrid origin of 

 this fish. 



