104 CONTRIBUTIONS TO NOETH AMERICAN ICHTHYOLOGY — IV. 



Georgia ; rather coraraou. Eesembles A. hrunneus, but less slender aud 

 with a difiereut mouth. 



(Piimlodus platijccphalns Girard, Proc. Acad. Nat. Sci. Phila. 1859, 161 ; Jordan, 1. c. 

 93.) 



95. A. xantBaocepEaaStns (Raf.) Gill. 



Chiefly uuiform yellowish brown, often rather pale. Head about as 

 broad as long, 4 in length. Dorsal spine nearer adipose fin than snout, 

 its rays usually 19 (18-20). IMouth very broad. Body short and stout. 

 Barbels shorter than head. Humeral process very short, covered by 

 skin. Size small. Ohio Valley. 



{Silurus xanthocci)Ualus Raf. Quart. Jouru. Sci. Lit. Arts, Lond. 1820, 51 ; Jordo.u, 1. 

 c. 42.) 



96. A. DEteSas (Raf.) Jordan «& Coi>eland. — Ball-head. 



Color almost black. Body very stout, short, aud deep, the depth 3} 

 to 4J in length. Head broad behind, rather contracted forward, the 

 front steeply elevated. Anal fin sliort and deep, of 17-19 rays, its base 

 nearly 5 in length, the color of the rays forming a shari> contrast with 

 that of the dusky membranes. Jaws nearly equal. Barbels longer 

 than head. Humeral process rather long, rugose. Size small. Missis- 

 sippi Valley to New York ; common. 



{SiltirHs mclas Raf. Quart. Journ. Sci. Lit. Arts, Lond. 1820, 51 : Pimdodus cafidus 

 Grd. Ichth. U. S. Pac. R. R. Surv. 1858,208: Pimdodus covfuvs Grd. Proc. Acad. Ny,t 

 Sci. Phila. 1859, 159: Amiurus ohesus GiW, Proc. Best. Soc. N^at. Hist. 1832, 45; Jordan, 

 1. c. 89: Pimdodus pull us DcKay, New York Fauna, Fish. 184: Amiurus pallus Jordan, 

 I. c. 93.) 



9^. A. EaiarDSaoratMS (Holbrooli) 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 ; slope of profile very steep. Dorsal fin high ; 

 the spine more than half length of head. Dorsal spine nearer adipose 

 fin than snout. Barbels long. Branchiostegals 10. He^id 3J in length. 

 Anal 21. L. 15 inches. Southern Illinois to Florida. Perhaps a variety 

 of A. catus. 



(Pimdodus marmoratus Kolbvook, Jouru. Acad. Nat. Sci. Phila. 1855, .54 : Jordan, 1. c. 

 89.) 



9§. A. caltas (Linn.) Gill. — Bull-head; Horned Pout; Small Cat-fish; Sdiiiyllcill Cat; 

 Sacramento Cat. 



Color dark yellowish brown, more or less clouded, sometimes yellow- 

 ish, sometimes nearly black. Body rather elongate 5 depth 4-4^ in 

 length. Anal fin usually with 21 or 22 rays, its base 4 in body. Dor- 

 sal fin inserted rather hearer adipose fin than end of snout. Upper jaw 

 usually distinctly longer than lower. Humeral process more than half 



