IMYXOSTOMA AUREOLUM. 125 



Catostomvs aureolus STOKER, Synopsis, 420, 1846. 

 Catostomus aureotus AGASSIZ, Lake Superior, 357, 1850. 



Ptychostomus aureolus AGASSIZ, Am. Journ. Sc. Arrs, 2d series, xix, 204, 1855. 

 Ptychostomm aureolus PUTNAM, Bull. Mus. Comp. Zool. 10, 1863. 

 Ptychostomus aureolus COPE, Proc. Ac. Nat. Sc. Phila. 285, 1864. 

 Catostomus aureolus GUNTIIER, Cat. Fishes Brit. Mus. vii, 16, 1S68. (In part; 



description apparently copied and confused.) 

 PtycJto*tomus aureolas COPE, Proc. Am. Philos. Soc. Phila. 476, 187G 

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

 Ttretulus aureolum NELSON, Bull. No. 1, Ills. Mus. Nat. Hist. 49, 1876. 

 Teretulus aureolas JORDAN & COPELAND, Check List, 157, 1876. (Name only.) 

 Mojcosioma aureola JORDAN & GILBERT, in Klippart's Kept. 53, 1876. (Name only.") 

 Myxostoma aureola JORDAN, Man. Vert. E. U. S. ed. 2d, 314, 1878. 

 1823 Catosom us Itsueurii RICHARDSON, Franklin's Journal, 772, 1823. 

 1836 Ctfprinus (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. 

 Calostomus sueurii STORER, Synopsis, -125, 1846. 

 PtycJiostomus sueurii COPE, Proc. Am. Philos. Soc. Phila. 477, 1870. 

 Teniulus sueurii JORDAN & COJ*ELAND, Check List, 157, 1876. (Name only.) 

 Catostomus macrolepidotus GENTHER, 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 special 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 sueur'd" 

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

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



