72 Bulletin 12 300 



Macrodon sp 



A species closely related to M. blairi has 

 been found at Battel, Brownstown, Pixley 

 knob, and Borden, Ind. 



Macrodon newarkensis? 



An imperfedl specimen is referred to this 

 species from Riley's, Ky. 



Modiomorpha affinis Hall x 



Common. Clark county (James Hall). 



Modiomorpha alta Hall x 



Falls of the Ohio and Charlestown 

 (James Hall). 



Modiomorpha charlestownensis Nettle- 

 roth X 



Clark county (Nettleroth). 



Modiomorpha concentrica Hall x 



Rare. Falls of the Ohio and Charles- 

 town (James Hall), Lexington, Ind. 



Modiomorpha my tiloides Con x 



Clark county (Nettleroth). Falls of the 

 Ohio. 



Modiomorpha redla Hall x 



Clark county (James Hall). 



*Myalina keokuk Worthen 



Harrison and Washington counties, 8. 

 Abundant in the sandstone at Ivow Gap 

 Ridge and Borden, Ind. 



Nucula sp... % 



Rare. Bartel, Ind. 



Nucula hians Hall 



Rockford (James Hall). 



Nucula nov. sp 



Crothersville, Ind. 



Nucula lirata Conrad, 11 x 



Shelby county. 



