THE NAUTILUS. 95 
Lossman’s Key, Monroe County, Florida [see NautiLus, XX VI 
(1920), 20]. 
Truncatella bilabiata Pfr. 
Chevalier Place (a Key), Chatham River, Monroe County, 
Florida. 
Helicina orbiculata Say. Gastrocopta p. hordeacella 
Polygyra c. carpenteriana (Bld.). —‘ (Pils. ). 
Polygyra uvulifera (Shutt. ). Gastrocopta c. peninsularis Pils. 
Thysanophora selenina (Gld.). Polita indentata (Say). 
Thysanophora plagioptycha Luconulus 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. carpenteriana (Bld.). (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 minuscula (Binn. ). 
Tiguus c. lossmanicus Pils. Zonitoides singleyana (Pils. ) 
Gastrocopta rupicola (Say). 
THE LEAPING RAZOR 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 
