THE NAUTILUS. 103 



Nameless Key (Mr. Addison's) two miles east of Marco. 



Helicina orbiculata Say. 

 Thysanophora selenina Gld. 

 Polygyra cereolus f. carpenteriana Bid. 

 Pupoides modicus Gld. 

 Bifidaria contracta Say. 

 Bifidaria p. hordeacella Pils. 

 Bifidaria rupicola Say. 

 Microceramus floridanus Pils. 

 Euglandina rosea parallela Binn. 

 Vitrea dalliana ' Simp ' Pils. 

 Guppya gundlachi Pfr. 

 Zonitoides minuscula Binn. 

 Zonitoides singleyana Pils. 



Near Punta Rassa. 

 Truncatella bilabiata Pfr. 

 Polygyra cereolus f. volvoxis Pfr. 

 Euglandina rosea parallela Binn. 



Aboriginal shell- heap about one mile east of St. James, Pine Island. 



Truncatella clathrus Lowe. 



Truncatella cariba?ensis ' Sby. ' Rve. 



Truncatella caribaeensis succinea C. B. Ad. 



Truncatella bilabiata Pfr. 



Praticolella jejuna Say. 



Polygyra cereolus f. volvoxis Pfr. 



Bifidaria p. hordeacella Pils. 



Bifidaria rupicola Say. 



Guppya gundlachi Pfr. 



Zonitoides minuscula Binn. 



Zonitoides singleyana Pils. 



Pine land, N. "W. end of Pine Island. 

 Helicina orbiculata Say. 

 Bifidaria contracta Say. 

 Bifidaria p. hordeacella Pils. 

 Bifidaria rupicola Say. 



Euglandina rosea Fer. near var. parallela Binn. 

 Guppya gundlachi Pfr. 

 Zonitoides minuscula Binn. 



