58 Bulletin 12 186 



*Atrypa spinosa Hall.... x 



Rare at Falls of the Ohio, Charlestown, 

 Clark county (Nettleroth). 



Barriosella subspatulata (Meek and Wor- 



then) 



Rockford, Ind. (Hall and Clark). 



Camarotoechia Carolina Hall x 



Falls of the Ohio (Hall and Clark). 



Camarotoechia congregata ( Conrad ) x 



Falls of the Ohio (Hall), Watson, Ind., 

 Lexington. 



Camarotoechia sappho Hall 



Common throughout the region. 



^Camarotoechia tethys (Bill.) x 



Common af Falls of the Ohio, Lancaster, 

 Kent, Watson, Bear Grass creek, Louis- 

 ville, Scipio, Sellersburg, Lexington, Paris 

 Crossing, Ind., Huber, Ky. 



Chonetes acutiradiatus Hall x 



Falls of the Ohio, Utica, and Clark 

 county (James Hall), (Nettleroth). 



Chonetes arcuatus Hall x 



Common at Paris Crossing, Ind. 



Chonetes coronatus x 



Rare. Scott county. New Albany (Bor- 

 den), Lexington, Ind. 



Chonetes geniculatus White ? 



Abundant at Crothersville and Gui'nea 

 Knobs, Ind. 



Chonetes illinoisensis Worthen 



Common at Bartel and Pixley Knob, 

 Ind., and Brooks, Lebanon Jun(5lion, 

 Riley's, and Crab Orchard, Ky. 



^Chonetes lepidus Hall 



New Albany, Scott county, Lexington, 

 and Jennings county, Ind. (Whitfield). 



