78 ICHTHYOLOGIA OHIENSIS 



■with the hook. I shall divide them into two sub- 

 genera. I had ■wrongly blended this genus and the 

 Icthelis under the name Lepomis 13. G. of my Prodr. 

 N. G. 



I St Subgenus. Aplites. 



Only one flat spine on the opercule, decurrent in a 

 small medial opercule : first ray of the thoracic fins 

 soft or hardly spiny. Meaning, single -weapon. 



i2th Species. Pale River-bass. Lepomis pallida. 

 Lepome pale. 



Olivaceous above, -white beneath, a bro-wn spot at 

 the base of the lateral line, an obtuse appendage on 

 the opercule, spine behind it : 3 faint obliqual streaks 

 on the gill covers; lower jaw longer: tail forked, 

 pale yellow, tip brown. 



Not uncommon in the Ohio, Miami, Hockhocking, 

 &c. Vulgar 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 

 medial longer, i spiny ray and 14 soft rays to the 

 hind part. Anal fin rounded 13 rays, whereof 2 are 

 spiny and short. Pectorals rounded with 14 rays. 

 Tail with 18. Thoracics with 6. Eyes [II. 51] [j/] 

 large, black, iris brown with a gold ring. Lateral 

 line following the back, straight near the tail. 



13th Species. Streaked-cheeks River- Bass. 

 Lepomis trifasciata. Lepome trifasciee. 



Whitish, crowded with unequal and irregular 

 specks, of a gilt olive colour, none on the belly: gill 

 covers with 3 large oblique streaks of the same 

 colour: opercule without appendage, spine acute, a 



