MYXOSTOMA AUREOLUM. 125 



Catostomvs nureohis Stoker, Synopsis, 420, 1846. 



Catostomus aureoius Agassiz, Lake Superior, 357, 1850. 



Ptychostomus aureoius Agassiz, Am. Journ. Sc. Arts, 2d series, xix, 204, 1855. 



PUjchostomns anreohis Putnam, Bull. Mus. Cornp. Zool. 10, 18G3. 



Ptychostomus aureoius Copk, Proc. Ac. Nat. Sc. Phila. 283, 18G4. 



Catostomus aureoius Guis;thj:i{, Cat. Fishes Brit. Mus. vii, 16, 1868. (In part; 

 descriptiou apparently copied and coufused.) 



PtycliOviomus aureoius Cope, Proc. Aiu. Philos. See. Phila. 476, 187G 



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



Teretulus aureolum Nelson, Bull. No. 1, Ills. Mus. Nat. Hist. 49, 1876. 



Teretulus aureoius JouVAii & Copeland, Check List, 157, 1876. (Name only.) 



Moxostoma aureola J ORVAyi & Gilbert, in Klippart's Kept. .53, 1876. (Name only."! 



Myxostoma aMWoZa Jordan, Man. Vert. E. U. S. ed. 2d, 314, 1878. 

 IS23 — Cat OS' omus lesueurii Richardson, Franklin's Journal, 772, 1823. 

 1836 — Ciiprinus {Catostomus) sueurii Richardson, Faun. Bor.-Am. Fishes, pp. 118, 303, 

 1836. 



Catostomus sueurii Cuv. & Val., Hist. Nat. des Poissons, xvii, 465, 1844. 



Catostomus sueuri DeKay, New York Fauna, part iv. Fishes, 203, 1842. 



Catostomus sueurii Storer, Synopsis, 425, 1846. 



Ptychostomus sueurii Cope, Proc. Am. Philos. Soc. Phila. 477, 1870. 



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

 1868 — Catostomus macrolepidotus Gijnther, Cat. Fishes Brit. Mus. vii, 18, 1868. (Excl. 

 syn. part. Not of Le Sueur.) 



Habitat. — Great Lake Region, Upper Missouri and Ohio Valleys, and northward. 



This Species is very closely related to the last, and may possibly be a 

 variety of it, as specimens of var. macrolepidotum often occur which are 

 with difficulty distinguished from it. In general, however, the smaller 

 head, smaller mouth, and deeper body of aureolum sufficiently distin- 

 guish them. This species is less abundant than macrolepidotum^ and is 

 apparently more .northerly in its distribution. It has been well figured 

 by DeKay. 



The synonymy of this species needs no S[)ecial remark. It seems 

 probable that C. lesueurii belongs here, although the statement that 

 "the muzzle projects an inch beyond the mouth" in a specimen 19 

 inches long, if correct, would indicate difference. The name " le sueuriV^ 

 was first given, and afterwards changed to '■^sueurii "on the ground that 

 the article " Ze" is not an integral part of Le Sueur's name. 



