186 Bulletin 47, United States National Museum. 



with the anal fin more or less swollen and emarginate". Length about 10 

 inches. Great Lakes, Mississippi Valley, and eastward in lakes,and low- 

 land streams ; very abundant j the typical form, sucetta, occurring coast- 

 wise from Virginia to Texas. (French sucet, sucker.) 



Cyprinus sucelta, LACPEDE, Hist. Nat. Poiss., v, 606, 1803, South Carolina. 



Moxostoma kennerlyi, GIRARD, Proc. Ac. Nat. Sci. Phila., 1856, 171, Dry Creek, Victoria, Texas. 



(Type, No. 161.) 



Moxostoma campletti, GIRARD, I. c., 172,1856, Live Oak Creek and Devil River, Texas. 

 Moxostoma tenue, AGASSIZ, Am. Jour. Sci. Arts, 1855, 203, Mobile, Alabama. 

 Erimy&m goodei, JORDAN, Bull. U. S. Nat. Mus., XH, 148, 1878, St. Johns River, Florida. 

 Erimyzon goodei, JORDAN & GILBERT, Synopsis, 134, 1883. 



Represented northward by 



302a. ERIMYZON SUCETTA OBLONGUS, (Mitchill). 



Body more elongate and less compressed than in typical sucetta, the 

 greatest depth being contained about 3 times in the length. Nape more 

 gibbous than in E sucetta. Head quite small and short, the eye smaller, 

 about 4f in head, being almost exactly midway in its length, which is 4 

 in that of the body. Scales smaller and less uniform in their imbrication 

 than in E. sucetta, the usual number 43-15. Color dark olivaceous above j 

 the adult nearly plain, the young with a distinct black lateral band 

 which breaks up into bars with age. Great Lake region to Maine and the 

 Dakotas, south to Virginia and Indian Territory, every where abundant in 

 northern upland streams, gradually passing southward into the typical 

 sucetta. (oblongus, oblong.) 



Cyprinus oblongns, MITCHILL, Trans. Lit. and Phil. Soc. N. Y., 1815, 1, 459, New York. 

 Moxostoma oblongum, GtJNTHER, Cat.,vn, 21, 1868. 

 OaJloftomua gibbosus, Connecticut River, Northampton; tuberculaius, Germantown, Pa.; 



and vttiatus, Wissahickon River, Pennsylvania, LE SUEUR, Jour. Ac. Nat. Sci. Phila. , 



I, 1817, 92, 93, 104. 



Gatostonms fasciolaris, RAFINESQTJE, Ichth. Oh., 58, 1820, Ohio River. 

 Labeo elegans, New York; esopus, New York; and elongatus, Mohawk River, DE KAY, N. Y. 



Fauna: Fishes, 1842, 192, 195, 394. 

 Moxostoma claviformis, GIRARD, Proc. A". Nat. Sci. Phila., 1856, 171, Coal Creek, Canadian 



River, Indian Territory. (Typo, No. 165.) 

 Erimyzon sucelta, JORDAN & GILBERT, Synopsis, 134, 1883. 



96. MINYTREMA, Jordan. 

 (SPOTTED SUCKERS.) 



Minytrema, JORDAN, Man. Vert. E. U. S., Ed. 2,318, 1878, (melanops). 



Head moderate, rather broad above ; mouth moderate, inferior, hori- 

 zontal ; the upper lip well developed, freely protractile ; the lower rather 

 small, infolded, yy-shaped in outline, plicate. Lower jaw without carti- 

 laginous sheath. Eye moderate, rather high, placed about midway of the 

 head. Suborbital bones well developed. Opercular bones well developed, 

 not much rugose. Fontanelle rather large. Gill rakers rather long. 

 Isthmus moderate. Pharyngeal bones essentially as in Moxostoma. Body 

 rather elongate, subterete, becoming deep and rather compressed with 

 age. Scales rather large, nearly equal over the body. Lateral line in- 

 terrupted in the adult, but with perfect tubes, imperfect in partly grown 

 specimens, entirely obsolete in the young. Scales in a longitudinal series, 



