24 



CYPRINID^, 



It is evident from Bleeker's description of the pharyngeal bones 

 that this is not a Carpiodes ; probably it may prove to be the tyjje 

 of another subgeneric section. 



/3. Sclerognathus. 



5. Sclerognathus cjrprinella. 



Cuv. Sf Vol. xvii. p. 477, pi. 518. 



D. 33. A. 11. L. lat. 41. L. transv. 10/7. 

 Mouth terminal ; the pharyngeal teeth increase in size down- 

 wards, but even the largest are of small size. The height of the 

 body is contained twice and three-fourths in the total length (with- 

 out caudal). Anterior dorsal rays of moderate length. (Veil.) 

 Lake Pontchar train. 



Agassiz distinguishes an Ichthyobus huhalus (a Eafinesquian name), 

 an Ichthyohus ranchii and stolleyi, Amer. Journ. Sc. &, Arts, xix. 1855, 

 p. 81. If these be distinct species, no one wUl be able to recognize 

 them from the notes published. 



4. CAEPIODES. 



Catostomus, sp., Lesueui: 

 Sclerognathus, sp., Cuv. Sf Val. 



Carpiodes, (HaJiHesque) Agassiz, in Amer. Journ. Sc. Sj- Arts,xhi. 1855, 

 p. 74. 



Distinguished from Sclerognathus by its very thin, compressed 

 pharyngeal bones, which are armed with a comb-like series of nearly 

 equally minute compressed teeth. 



United States. 



1. Carpiodes cypriuus. 



Catostomus cyprinus, Lesueur, Journ. Ac. Nat. Sc. Philad. i. 1817, 

 pp. 91, 110; I7iot)ipson, Nat. Hist. Vermont, p. 133. 



Laheo cvpriuus, (Cuv.) Dekay, New Ywk Fauna, Fish. p. 194, pi. 77. 

 fig. 243. 



Sclerognathus cyprinus, Cuv. 8f Val. xvii. p. 474 ; Kirtland, Boston 

 Journ. Nat. Hist. v. p. 275, pi. 22. fig. 2. 



Carpiodes vacca, Agass. in Amer. Journ. Sc. 8f Arts. xvii. 1854, p. 356. 



velifer, ( Rajitiesque) Agass. I. c. xix. 1855, p. 70. 



thompsoni, Agass. I. c. 



? Carpiodes bison, Agass. I. c. xvii. 1854, p. 356. 



D. 27-32. A. 9. L. lat. 35-40. L. transv. 8/9|. 



Mouth inferior. The height of the body is more than one-third 

 of the total length (without caudal). Anterior dorsal rays some- 

 times much elongate*. There are five and a half longitudinal series 

 of scales between the lateral line and the root of the ventral fin. 



United States. 



a. Fine specimen. Presented by Max., Prince of Neuwied. 



* It cannot be presumed that all individuals are provided with much-elongato 

 anterior dorsal rays at all seasons, at every age, and of each sex. 



