532 PROCEEDINGS OF THE ACADEMY OF [Oct., 



BlFIDARIA PENTODON Say. 



Bifid art a contracta clime an a Van. 

 Strobilops strebeli Pfr. 



VlTREA INDENTATA Say. 

 ZONITOIDES ARBOREA Say. 



Zonitoides singleyana Pils. Greenish-yellow. 

 Pyramidula alternata Say. 



