1911.] NATURAL SCIENCES OF PHILADELPHIA. 529 



BlFIDARIA CONTRACTA CLIMEANA Van. 

 VlTREA INDENTATA Say. 



Striatura milium Mse. 



ZONITOIDES ARBOREA Say. 



Zonitoides minuscula Binn. 



Lovett Landing, Bayou Bartholomew, Morehouse Parish, La.: 



Zonitoides arborea Say. 

 Zonitoides singleyana Pils. 

 Vertigo rugulosa St. 



Sycamore Landing, Bayou Bartholomew, Morehouse Parish, La.: 



BlFIDARIA CONTRACTA CLIMEANA Van. 

 BlFIDARIA PENTODON TAPPANIANA Ad. 



Strobilops texasiana Pils. 

 Zonitoides arborea Say. 



Wards Place near Wardville, Bayou Bartholomew, Morehouse 

 Parish, La. : 



Strobilops strebeli aenea Pils. 

 Zonitoides minuscula Binn. 

 Zonitoides singleyana Pils. 



Near Miller Landing, Bayou Bartholomew, Morehouse Parish, La.: 



POLYGYRA THYROIDUS Say. 



Zonitoides arborea Say. 

 Zonitoides minuscula Binn. 

 Pyramidula alternata Say. Young. 



Mound Landing, Bayou Bartholomew, Morehouse Parish, La.: 



POLYGYRA THYROIDUS Say. 



Near Jones, Bayou Bartholomew, Morehouse Parish, La.: 



POLYGYRA THYROIDUS Say. 



Polygyra inflecta Say. 



BlFIDARIA PENTODON TAPPANIANA Ad. 



Strobilops strebeli aenea Pils. 



VlTREA INDENTATA Say. 



Omphalina friabilis Binn. 

 Mesomphix laevigata Beck. 

 Pyramidula alternata Say. 



