THE NAUTILUS. 33 



SEMINOLE POINT, Monroe Co. Part of a key. Collected by 

 Clarence B. Moore. 



Truncatella caribaeensis ' Sby.' Rve. 



Truncatella bilabiata Pi'r. 



Polygyra c. carpenteriana Bid. Many of the specimens in this 

 lot have the internal lamina reduced to a few indistinct nodules. 



Bifidaria p. hordeacella Pils. 



Bifidaria rupicola Say. 



Vertigo rugosula oralis St. 



SNAKE KEY, Monroe Co. Collected by Clarence B. Moore. 



Truncatella bilabiata Pfr. 



Polygyra c. carpenteriana Bid. The specimens from this place 

 are very small and many have a very high spire ; they also almost 

 lack the internal lamella. 



Bih'daria p. hordeacella Pils. 



SNIPE KEY, Monroe Co. Collected by S. Brown and H. W. 

 Fowler. 



Helicina o. clappi Pils. 



SUGAR-LOAF KEY, Monroe Co. Collected by H. A. Pilsbry and 

 C. T. Simpson. 



Truncatella bilabiata Pfr. 

 Truncatella clathrus Lowe. 

 Helicina orbiculata Say. 

 Helicina o. clappi Pils. 

 Tliysanophora selenina Gld. 

 Thysanophora incrustata Poey. 

 Tliysanophora plagioptycha Sliutt. 

 Polygyra cereolus Miihlf. 

 Polygyra c. carpenteriana Bid. 

 Microceramus pontificus Gld. 

 Strobilops floridanus Pils. 

 Strobilops hubbardi Br. 

 Varicella g. floridana Pils. 

 Pupoides modicus Gld. 

 Bih'daria p. hordeacella Pils. 

 Vitrea dalliana ' Simps.' Pils. 



SUMMERLAND KEY, Monroe Co., collected by Dr. Pilsbry. 

 Truncatella bilabiata Pfr. 



