140 Bulletin 47, United States National Museum. 



Pimelodus natalis, LsSuEUR, Mem. Mus., v., 154, 1819, North America. 



Amiurus natalis, GUNTHER, v, 101,1864 ; JORDAN, I. c., 86,1877. 



Silurus lividus, \ar.fuscatus, and Silurus cuprem, RAFINESQUE, Quart. Jour. Sci. London, 1820, 48, 

 51, Ohio River. 



Pimelodus felinus et antonitnsis, GIRARD, Pac. K. R. Expl.,x. 209, 1858, Canadian and San An- 

 tonio rivers, Texas. (Type, Nos. 924 and 923. ) 



Pimelodus calm, GIRAHD, Proc. Ac. Nat. Sci. Phila., 1859, 159, Aux Plaines, Illinois. 



Pimelodus cupremdes, GIRARD, I c., 1859, 159, Aux Plaines, Illinois. (Type, No. 1497.) 



Pimelodus ccenosus, RICHARDSON, Fauna Bor. Amer., in, 132, 1836, Lake Huron. 



Pimelodus cupreus, RAFINESQUE, Ichth. Oh., 65, 1820, Ohio River. 



Amiurus natalis, JORDAN & GILBERT, Synopsis, 105, 1883. 



AmiurmI)olli,CoFE, Bull. U. S. Nat. Mus., xx, 35, 1880, Little Wichita River, Texas. 



Amemrus bolli, JORDAN & GILBERT, Synopsis, 881, 1883 ; this form lias rather longer spines than 

 usual in natalis, approaching erebennm. 



Amiurus natalis analis, JORDAN, I. c., 1877, 81, Arkansas River. (Type, No. 31088.) 



216. AMEIURUS VULGARIS, (Thompson). 



Anal rays 20. Body moderately elongate ; depth 4| to 5 in length; head 

 3| to 4. Barbels long ; mouth wide ; head longer than broad, rather nar- 

 rowed forward ; profile rather steep, evenly convex ; dorsal region more or 

 less elevated. Lower jaw more or less distinctly projecting; in other 

 respects scarcely distinct from A. nebulosus, with which it may inter- 

 grade. Dark reddish brow.n or blackish. L. 18 inches. Vermont to Min- 

 nesota and Illinois, chiefly northward ; not rare, (vulgaris, common, 

 which is not true in most of its range.) 



Pimelodus vulgaris, THOMPSON, Hist. Vermont, 138, 1842, Lake Champlain. 



Pimelodus deJcayi, GIRARD, Proc. Ac. Nat. Sci. Phila., 1859, 160, Oswego, N. Y. (Type, No. 1513. ) 



Rmelodusailurus, GIRARD, Pac. R. R. Expl., x, 210, 1858, L.Amelia, Minnesota. (Type, No. 904.) 



Amiurus selurus, JORDAN, I. c., 1877, 88. 



Amiurus vulgaris, JORDAN & GILBERT, Synopsis, 105,1883. 



217. AMEIURUS NEBULOSUS, (Le Sueur). 



(HORNED POUT; COMMON BULLHEAD; SMALL CATFISH; SCHUTLKILL CAT; SACRAMENTO CAT.) 



Body rather elongate ; depth 4 to 4| in length. Anal fin usually with 

 21 or 22 rays, its base 4 in body ; dorsal fin inserted rather nearer adipose 

 fin than end of snout. Upper jaw usually distinctly longer than lower. 

 Humeral process more than i the length of pectoral spine, which is rather 

 long. Color dark yellowish brown, more or less clouded, sometimes yel- 

 lowish, sometimes nearly black. L. 18 inches. Great Lakes, Ohio Valley, 

 eastward to Maine, southwestward to Texas, and southeastward to 

 Florida. The common bullhead, or Horned Pout of the North and East, 

 abundant in every pond and stream ; also introduced about 1877 into the 

 Humboldt, Sacramento, San Joaquin and Gila rivers, where it is now 

 excessively abundant. Variable, (nebulosus, clouded.) 



Pimelodus nebulosus, LE SUEUR, Mem. Mus., v. 149, 1819, Lake Ontario. 



Pimelodus alrariu*, DE KAY, N. Y. Fauna: Fish., 185, 1842, Wappingers Creek, Dutchess 

 County, N. Y. 



dd. Colors dark, black or greenish. Great Lake region, north and east. 



CffiNOSUS. 



cc. Anal 26; rays low, its base 3% in body; spines weak; nape more or less swollen 

 and elevated. Alabama River to Texas. ANTONIENSIS. 



ccc. Anal 27, its base 3% in length, its rays high, more than % head; spines strong, 

 nape not swollen. Little Red River, Ark. ANALIS. 



aa. Dorsal spine inserted nearer adipose fin than tip of snout, the posterior part of body thick- 

 ened and shortened; jaws subequal. Great Lakes to North Carolina and south. 



NATALIS. 



