MYXOSTOMA AUREOLUM. 125 



Catostomvs nureolus Stoker, Synopsis, 420, 1846. 



Calostomus aui-eolns Agas^siz, Lake Superior, 357, 1850. 



Ptychostomus aureolus Agassiz, Am. Journ. Sc. Ars, "2(1 seriea, xix, 204, 1855. 



Ptychostomus aureolus Putnam, Bnll. Mus. Coiiip. Zool. 10, 1863. 



Ptychostomus aureohis Copk, Proc. Ac. Nat. Se. Pliila. 285, 1864. 



Catostomus aureolus Guktiiku, Cat. Fishes Brit. Mus. vii, 16, 1868. (In part; 

 description apparently copied and confused.) 



Ptychoslomns aureolus Cope, Proc. Am. Pbilos. Soc. Phila. 476, 1870 



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



Tt7-etuhis aureoluvi Nelson, Bull. No. 1, Ills. Mus. Nat. Hist. 49, 1876. 



Teritulus nurcolusjoiivxyi &, Copeland, Check List, 157, 1876. (Name only.) 



Moxostoma aureola J cnvAy: & Gilbert, in Klippart's Kept. .53, 1876. (Name only.") 



Myxostoma aureola J OUD as, Man. A^ert. E. U. S. ed. 2d, 314, 1878. 

 l&2'i — Catos omus lesueurii Eichardson, 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. 



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



Catostomus sueurii Storer, Synopsis, 425, 1846. 



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



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

 1868 — Catostomus macrolepidoitts GtJNTnER, 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 sjiecies 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 

 j)robal)le 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 smsuriP' 

 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. 



