6o Bulletin 12 188 



Cry ptonella lens Hall x 



Clark county (Hall and Whitfield). 



Cry ptonella ovalis Miller x 



Rare. Bunker Hill, 17, Falls of the 

 Ohio. 



*Cyclorhina nobilis Hall x 



Char lest own. 



Cyrtina sp 



An undetermined species occurs in the 

 shale at Pixley Knob, Ind. 



Cyrtina crassa Hall x 



Falls of the Ohio, Utica, Ind. (Nettle- 

 roth), (Hall). 



*Cyrtina hamiltoneusis Hall (Nettleroth).. x 



Clark county. Rare. Falls of the 

 Ohio, Scipio, Paris creek, Sellersburg, 

 Kent, Ind. 



Cyrtina hamiltoniae var. re<5la Hall x 



Falls of the Ohio (Nettleroth). 



*Delthyris consobrina (d'Orbigny) x 



Falls of the Ohio and Charlestown, Ind. 



*Delthyris raricosta Conrad x 



Falls of the Ohio (Hall). 



Delthyris sculptilis Hall x 



Falls of the Ohio (Nettleroth). 

 Derbya keokuk Hall 



Abundant in many localities. Browns- 

 town, Kdwardsville, lyow Gap Ridge, Ind., 

 Brooks, and Crab Orchard, Ky, 



Deilasma bovidens (Norton) ? 



A specimen from Lebanon Jundlion is 

 doubtfully referred to this species. 



Eunella harmonia Hall x 



Falls of the Ohio (Hall). 



^Eunella lincklaeni Hall x 



Falls of the Ohio (Nettleroth), Bear 

 Grass creek, Louisville. 



