1Q4 CONTRIBUTIONS TO NORTH AMERICAN ICHTHYOLOGY — IV. 
Georgia ; rather comiiioii. Ecse^bles A. brunneus, but less slender and 
with a different month. 
(l^imclodus iilat'jcephalas Girard, Proc. Ac.ad. Nat. Sci. Pbila. 1859, 161 ; Jordan, 1. c. 
93.) 
95. A. xacatEiocepSaaltas (Raf.) Gill. 
Chielly nniforni yellowish brown, often rather pale. Head about as 
broad as long, 4 in length. Dorsal spine nearer adipose (in than snout, 
its rays usually 19 (18-20). Mouth very broad. Body short and stout. 
Barbels shorter than head, numeral process very short, covered by 
skin. Size small. Ohio Valley. 
{Silurus xanthoccplialus Raf. Quart. Jouru. Sci. Lit. Arts, Loud. 18‘20, 51 ; Jordon, 1. 
c. 42.) 
96. A. meBas (Raf.) Jordan & Copeland. — Bull-head. 
Color almost black. Body very stout, short, and deep, the depth 31 
to 4;^ in length. Head broad behind, rather contracted forwar<l, the 
front steeply elevated. Anal fin short and deep, of 17-19 rays, its base 
nearly 5 in length, the color of the rays forming a sharp contrast with 
that of the dusky membranes. Jaws nearly equal. Barbels longer 
than head. Humeral jirocess rather long, rugose. Size small. Missis- 
sippi Vallej" to New York; common. 
{Silurus mclas Raf. Quart. Jouru. Sci. Lit. Arts, Loud. 1820, 51 : Pimdodus caiulns 
Grd. Ichth. U. S. Pac. R. R. Surv. 1858,203: Pimclodus coufiuis Grd. Proc. Acad. Na.t. 
Sci. Pliila. 1859, 159: Amiurus o&esas Gill, Proc. Bost. Soc. Nat. Hist. 1862, 45; Jordan, 
1. c. 89: Pimelodus pullus DcKay, New York Fauna, Fisk. 184: Amiurus jiuU.us Jordan, 
1. c. 93.) 
9^. A. ESiarnsiOE’aUas (Holbrook) Jordan. 
Body sharply mottled with brown, greenish, and whitish ; the color- 
ation therefore singular among cat-fishes. Jaws equal, or nearly so ; 
depth about 4 in length ; sloiie of profile very steep. Dorsal fin high ; 
the spine more than half length of head. Dorsol spine nearer adipose 
fin than snout. Barbels long. Branchiostegals 10. Head 3-^ in length. 
Anal 21. L. 15 inches. Southern Illinois to Florida. Perhaps a variety 
of A. cat us. 
{Pimdodus marmoratus Holbrook, Journ. Acad. Nat. Sci. Pliila. 1855, 54 : Jordan, 1. c. 
89.) 
98. A. catMS (Linn.) Gill. — Bull-head; UornedPout; Small Cod-fish; SchuylMll Cat; 
Sacramento Cat. 
Color dark yellowish brown, more or less clouded, sometimes yellow- 
ish, sometimes uearlj^ black. Body rather elongate; depth 4-4^ in 
length. Anal fin usually with 21 or 22 rays, its base 4 in body. Dor- 
sal fin inserted rather nearer adipose fin than end of snout. Upper jaw 
usually distinctly longer than lower. Humeral process more than half 
