24 



CrPRINID^, 



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

 that this is not a Oarpiodes ; pro|)ably it may prove to be the type 

 of another subgeneric section. 



/3. Schrognathus. 



5, Sclerognathus C3rpriiiella. 

 Cuv. ^ 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. {Vol.) 

 Lake Pontchartrain. 



Agassiz distinguishes an Ichthyobus huhalus (a Rafinesquian name), 

 an Ichthyobus ranchii and stolleyi, Amer. Journ. So. & Arts, xix. 1855, 

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

 them from the notes published. 



4. CARPIODES. 



Catostomus, sp., Lesueiir. 

 Sclerognathus, sp., Cuv. Sf Veil. 



Carpiodes, (liq/ine.sque) Agassiz, in Amer. Journ. Sc. <§- Arts, xix. 185-5, 

 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 cyprinus. 



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



Sp. 91, 110; Thompson, Nat. Hist. Vermont, p. 133. 

 eo cyprinus, {Cuv.) Dekay, New York Fauna, Fish. p. 194, pi. 77. 

 fig. 243. 

 Sclerognathus cyprinus, Cuv. 8f Val. xvii. p. 474 j KirtUind, Boston 



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

 Carpiodes vacca, Agass. in Amer. Journ. Sc. Sc Arts. xvii. 1854, p. 35G. 



velifer, (Rajinesque) Agass. I. c. xix. 1855, p. 76. 



thompsoni, Agass. I. c. 



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



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



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. PrcKented by Max., Prince of Neuwied. 



* It cannot he prceunipcl that all individuals are provided with miich-elongato 

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



