14tl CONTRIBUTIONS TO NORTH AMERICAN ICIITnYOLOGY III. 



1842— Zxitco elegans DkIvvy, New York Fauna, i)art iv, Fishes, 102. 



Catostomns elegans Sronv.U, Synopsis, 425, 184C. 

 1842— Laico cnopita DkKay, Now York Fauna, part iv, Fishes, 193. 



Catoatomua empus Stokkr, Synopsis, 425, 1846. 

 \>i\\>—Lahco ehnftatus DkKay, New York Fauna, part iv. Fishes, 394. 

 l^'to—MoiOHloma animrua Agassiz, Am. Journ. So. Arts, 2d series, xix, 202. (Not of 



Katine8(ine.) 

 1S5.'»— J/oj-o.s/oma tcuue Agassiz, Am. Journ. Sc. Arts, 2^1 series, xix, 203. 



Moxotitoma teiiuc Putnam, Bull. Mus. Comp. Zool. 10, 18G3. 



Moxoatoma ienue G^nther, Cat. Fishes Brit. Mus. vii, 21, 1868. 



Erimtizon tcnuia Jordan & Copeland, Check List, 157, 1876. 

 185G— Moxoatoma daviformia Girard, Proc. Ac. Nat. Sc. Phila. 171. 



Moxoatoma claviformis GiRARD, U. S. Pac. R. R. Expl. x,219, pi. xlviii, f. 5-9, 1S58. 



Erimyzon dariformia Jordan &, Copkland, Check List, 157, 1876. 

 \?T^(i— Moxoatoma Jccnnerlyi Girard, Proc. Ac. Nat. Sc. Phila. 171. 



Moxoatoma kennerlyi Girard, U. S. Mex. Bound. Surv. Ichth. 34, pi. xx, f. 7-0, 1859. 

 183G— Moxoatoma camphelU Girard, Proc. Ac. Nat. Sc. Phila. 172. 



Moxoatoma camphdli Girard, U. S. Mex. Bound. Surv. Ichth. 35, pi. xx, f. 4-6, 1859. 



Erimyzon camphdli Jordan Si. Copeland, Check List, 157, 1876. 

 ITaditat.— All waters of the United States east of the Rocky Mountains. 



This protean species is, next to Catostomus teres, the most abundant 

 anil tbe most widely dillused of our species of Suckers. It occurs in 

 cverj- stream from Maine to Texas, and thrives in all sorts of waters, 

 from the Great Lakes to the smallest ponds and brooks. Its variations 

 in color and form are remarkable; bur after theeliniinationoftho.se 

 which are known to be due to differences of sex, age, and surroundings, 

 I lind nothing left on which a ditterence of .species or even a varietal 

 <lifference may be based. I therefore unite all the nominal species of 

 this genus, with a single exception, under the oldest specific name ap- 

 plied to any of them, sucetta of Lacepiide. 



The name sucetta has been pas.sed from author to author for a \ouiX time, 

 all tlie descriptions being based on the notes of Bosc and the account 

 given by Lac( pi'de, no one seeming to have any clear idea of what the 

 ori^Mual species was. The reasons for identifying sucrtfa with ohJonrjus 

 have been already given. 



The name sitcctta was spelled succli by Valenciennes. I see no reason 

 for this change. The derivation of the word is from tlie Frencli sucet^ 

 a sucker; and succfta is an- agreeable latinization of the barbarous word. 

 The identity of the nominal species oblonfjus, gibbosus, tiibereulatiis, vitla- 

 tus, €sopus,cIongatus, i\i\d clegam yxnH conclusively shown by Professor 

 Agassiz. Thv JascioUtris of Kafinesque, as 1 have sliown, is probably 

 this species, which llalincsquo could hardly have overlooked. 



