CENTRAKCHID^E. XCII. 243 



3. /. aureolus, .Tor. GILDED Sux FISH. Pale olive, 

 young almost translucent; sides and fins profusely 

 speckled with golden orange, forming bars or chains; 

 orange below; cheeks with narrow blue horizontal lines; 

 no dorsal spots; flap moderate, rather narrow, narrowly 

 bordered by light; forehead regularly convex, the bulk 

 of the body thrown forward; dorsal spines moderate; 

 pectorals nearly reaching anal ; ventrals elongate; head 

 3 in length, depth 2^; eye = flap, 4 in head; lat. 1. 42. 

 Ohio Valley and W., abundant, frequenting small streams 

 in company with the next species and with Apomotis 

 cyanellus. 



4. /. lythroch!oris, Jor. RED AXD GREEN Sux FISH. 

 Form of Apomotis, the body more elongate than usual 

 in Xenotis; spines very low; green above with blue 

 spots; belly, cheeks and fins generally blood red; cheeks 

 with blue lines; opercular flap very long, entirely black, 

 without any pale margin. Ohio Valley, a peculiar species 

 frequenting small brooks; size small. (7". auritus, Raf., 

 not of L.) 



5. X. inscripfus, (Ag.) Jor. BLUE-GREEX Sux FISH. 

 Dark olive green, with blue shades; many scales marked 

 each with short horizontal black line, like a pencil mark, 

 these forming faint stripes along the sides of the back; 

 cheeks with blue lines; opercular flap moderate, rather 

 narrow, directed quite obliquely upwards* bordered above 

 and below by pinkish; spines long; depth 24- in length. 

 A small handsome species, abundant in the Valley of the 

 Ohio and S. 



6. X. pe /tastes, (Cope) Jor. A small deep-bodied 

 species, with large scales; caudal fin and peduncle more 

 than one -third the toted length; golden brown; sides 

 somewhat spotted; belly and vertical fins largely orange; 



