18 THE NAUTILUS. 



Bifidaria rupicola Say. 



Varicella gracillima Horidana Pils. 



BLUE HILL, HORR'S ISLAND, Lee Co. (near Key Marco), collected 

 by Clarence B. Moore. 



Thysanophora plagioptycha Shutt. 

 Pupoides raodicus Gld. 

 Bih'daria p. hordeacella Pils. 

 Bifidaria rupicola Say. 

 Vertigo variolosa Gld. 

 Guppya gundlachi Pf'r. 

 Vitrea dalliana ' Simps.' Pils. 



BOCA GRANDE KEY, Monroe Co., collected by Stewardson Brown 

 and H. W. Fowler. 



Drymseus multilineatus Say. 



Cerion incanum Binn. 



Succinea floridana Pils. 



BOCA CHICA KEY, Monroe Co. Collected by Dr. H. A. Pilsbry, 

 C. T. Simpson, S. Brown and H. W. Fowler. 



Chondropoma dentatum Say. 



Truncatella caribaeensis ' Sby ' Rve. 



Truncatella bilabiata Pfr. 



Helicina orbiculata Say. 



Helicina orbiculata clappi Pils. 



Thysanophora selenina Gld. 



Thysanophora incrustata Poey. 



Thysanophora plagioptycha Shutt. 



Praticolella jejuna Say. 



Cerion incanum Binn. 



Pupoides modicus Gld. 



Bifidaria p. hordeacella Pils. 



Bifidaria rupicola Say. 



Varicella g. floridana Pila. 



Guppya gundlachi Pfr. 



Vitrea dalliana ' Simps.' Pils. 



FIKAHATCHEE KEY, Lee Co. Collected by Clarence B. Moore. 



Helicina orbiculata Say. 



Helicina o. clappi Pils. 



Polygyra c. carpenteriana Bid. 



