so 



Ycry brown. Belly of a bright copper red colour. All the fins 

 black except the pectorals which are olivaceous, trapezoida 

 acute and large. The dorsal has 90 rays, whereof 9 short ones 

 are spiny. Body very short, hardly as long as broad, if the 

 head and tail are deducted. Thoracics like those of the forego 

 ing species 



V Genus. River Bass. Lepomts. Lepome. 

 This genus differs from Hoiocentrua by having the opercule 

 scaly, from Calliurua by the opercule only being such, while 

 *he preopercule is simple and united above with a square suture 

 over the head, besides the thoracic fins with 6 rays. Perhaps 

 the Cailiurus ought only to be a subgenus of this. From the 

 G. Icthelis it differs by the large raouth and spines on the oper- 

 cule. 



The name means scaly gills. The species are numerous 

 throughout the United States. They are permanent; but ram- 

 blers in the Ohio and tributary streams. They are fishes of 

 prey, and easily caught with the hook. I shall divide them 

 into two subgenera. I had wrongly blended this genus and the, 

 Icthelis under the name Lc/iomis 13. G.of my Prodr. N. G. 

 1st Subgenus. A^lites. 



Only one flat spine on tha opercule, decurrentin a small me* 

 dial opercule: first ray of the thoracic fins soft or hardly spiny. 

 Meaning, single weapon. 



12th Species. Pale River-bass. Lvfiomis jialiida. Lepome 

 pale. 



Olivaceous above, white beneath, a brown spot at the base of 

 he lateral line, an obtuse appendage on the opercule, spine be- 

 hind it: 3 faint obliqual streaks on the gill covers; lover jaw 

 longer: tail forked, pale yellow, tip brown. 



Not uncommon in the Ohio, Miami, Hockhocking, Sec. Vul- 

 gar name Yellow Bass, common Bass, &c. Length from 4 to 

 12 inches. Shape elliptic, diameter one fourth of the total 

 length. Fins olivaceous, without streaks, dorsal depressed or 

 interrupted in the middle, 9 spiny rays to the fore part, the me- 

 dial longer, 1 spiny ray and 14 soft rays to the hind part. Anal 

 *n rounded 13 rays, whereof 2 are spiny and short. Pectorals 

 glided with 14 rays. Tail with 18. Thoracics withe. Eye» 



