MYXOSTOMA MACROLEPIDOTUM. 121 



Catoslomus duquesnii Cuvier & Valencienxks, Hist. Nat. dca Poissous, xvii, 

 458, 1844. 



Catostomus dnqucsnit Kiiitland, Bostou Journ. Nat. Hist, v, 208, 1845. 



Catostomus dvquesnii Storeh, Sj^nopsis, 42.i, 1846. 



Piiichoxtomus duqiusmi Agassiz, Am. Journ. Sc. Arts, 2(1 series, xix, 204, 1855. 



Catostomus duqutsnii Gunthkr, Cat. Fishes Brit. Mus. vii, 18, 1808. 



Teretuhis duquesnei Copk, Journ. Ac. Nat. Sc. Phila. 236, 1868. 



Ptychostomus duqiicsni Copk, Proc. Am. Philos. Soc. Phila. 476, 1870. 



Ptychostomiis duquesnei Jokdax, Bull. Bufl'alo Soc. Nat. II:st. 95, 1876. 



Moxostoma duquesnii Jordan, Man. Vert. 295, 1876. 



Catostomus duquesnii Uhler & Lugger, Fishes of Maryland, V.i9, 1876. 



Teretuhis duquesnii Nelson, Bull. No. 1, Ills. Mus. Nat. Hint. 4'J, 1876. 



Teretulus duquesnii Jordan & Copeland, Check List, 157, 1876. (Narao only.) 



Moxostoma duquesnei Jordan & Gilbert, in Klippart's Kept. 53, 1876. (Name 

 only.) 



Mijxostoma duquesnii Jordan, Ann. Lye. Nat. Hist. N. Y. xi, 349, 1877. 



Myxostoma duquesnii Jordan, Bull. U. S. Nat. Mus. ix, 37, 1877. 



Mijxostoma tnacrolcpidota var. duquesni Jordan, Man. Vert. ed. 2d, p. 313, 1878. 

 1818— Catostovms erythrurus, Rvfinesque, Am. Month. Mag. and Crit. Rev. 354. 



Catostomus erythrurus Rafinesque, Ich. Oh. 59, 1820. 



Catostomus erythmrus Kirtland, Rept. Zool. Ohio, 168, 1838. 



Ptychostomus erythrurus Cope, Proc. Am. Philos. Soc. Phila. 474, 1870. 



Ptychostomus erythrurus Jordan, Fishes of Ind. 221, 1875. (Name only.) 



Teretulus erythrurus Jordan & Copeland, Check List, 157, 1876. (Name only.) 

 182Q—Rutilus melanurus Rafinesque, Ich. Oh. 51. 



Haiutat. — Ohio Valley. Upper Mississippi River and southward; niost abundant 

 from Wisconsin to Georgia. 



Examiniition of a very large series of "Mullet" and "lied Horse" 

 from various i>arts of the country has led me to the conclusion, at first 

 rather unexpected, that all the various forms included in the above 

 synonymy belong to one widely diffused and somewhat variable species. 



The "INIullet" of the lakes and of Eastern Pennsylvania appears gen- 

 erally to differ in the more elevated and compressed body, shorter, 

 deeper head, and brownish or brassy rather than silvery coloration. 

 This represents the general tendency of '•^vixr. macrokpiflotum^^ -, but 

 specimens of '■'• duqiiesneV can be found which will match the average 

 macrolepidotum in each of these respects. The form which I have iden- 

 tified with Professor Cope's lachrtjmale is to some extent intermediate, 

 but has the additional peculiarity of smaller scales. In this respect, 

 however, occasional individuals, both of dnqncsnci ixud oi macrolepidotum y 

 can be found which approach it. 



The form inhabitiug the waters of the eastern and northern parts of the 

 United States is the variety macrolepidotum. It is sold commonly as a food- 



