THE NAUTILUS. 95 



Lossman's Key, Monroe County, Florida [see NAUTILUS, XXVI 



(1920), 20]. 

 Truncatella bilabiata Pfr. 



Chevalier Place (a Key), Chatham River, Monroe County, 



Florida. 



Helicina orbiculata Say. Gastrocopta p. hordeacella 



Polygyra c. carp enter iana (Bid.). (Pils. ). 



Polygyra uvulifera (Shutt. ). Gastrocopta c. peninsularis Pils. 



Thysanophora selenina (Gld. ). Polita indentata (Say). 

 Thysanophora plagioptycha Eucomdus chersinus (Say). 



(Shutt.). Zonitoides arborea (Say). 



Gastrocopta rupicola (Say). Zonitoides minuscula (Binn.). 



Gopher Key, Monroe County, Florida. 



Helicina orbiculata Say. Gastrocopta p. hordeacella 

 Polygyra c. carpenter iana (Bid.). (Pils.). 



Polygyra uvulifera (Shutt.). Gastrocopta c. peninsularis Pils. 



Thysanophora selenina (Gld.). Polita indentata (Say). 



Thysanophora plagioptycha Guppya gundlachi (Pfr.). 



(Shutt. ) . Zonitoides arborea ( Say ) . 



Microceramus pontificus (Gld.). Zonitoides minuscida (Binn.). 



Liguus c. lossmanicus Pils. Zonitoides singleyana (Pils.) 

 Gastrocopta rupicola (Say). 



THE LEAPING EAZOR SHELL. 



BY JAMES SHEPARD. 



In making a tour throughout the length of Cape Cod in com- 

 pany with my daughter, C. Antoinette Shepard, we arrived at 

 Wellfleet, Mass., on the afternoon of August 30, 1882. We 

 had been on the beach but a short time when we beheld a sight 

 such as we had never before witnessed. The tide was well out, 

 and on the bare sand some rods from the water we noticed 

 numerous small objects leaping up into the air from place to 

 place and in various directions. We knew of nothing which 

 would be likely to be moving about in that manner. Making 

 our way hastily towards them, we found that those nearest to 



