12 



GASTEROPODA PIJLMONIFERA. 



Helicidse. 



* Vitrina limpida, Gld. 

 Hyalina cellaria, Mull. 

 Hyalina arborea, Say. 

 Hyalina electrina, Gld. 

 Hyalina indentata, Say. 



* Hyalina minuscula, Binn. 



* Hyalina milium, Morse. 



* Hyalina exigua, Stimpson. 



* Hyalina Binneyana, Morse. 



* Hyalina ferrea, Morse. 



* Hyalina chersina, Say. 



* Hyalina minutissima, Lea. 



* Hyalina multidentata, Binn. 

 Hyalina lineata, Say. 



* Macrocyclis concava, Say. 



* Limax agrestis, Lin. 



* Limax campestris, Binn. 



* Limax flavus, Lin. 

 Helix alternata, Say. 

 Helix striatella, Anth. 



* Helix asteriscus, Morse. 

 Helix labyrinthica, Say. 

 Helix hirsuta, Say. 

 Helix mono don, Rack. 

 Helix palliata, Say. 

 Helix tridentata, Say. 

 Helix albolabris, Say. 



* Helix dentifera, Binn. 

 Helix thyroides, Say. 



* Helix Sayii, Binn. 



* Helix harpa, Say. 

 Helix pulchella, Mull. 



* Helix hispida, Lin. 



* Helix hortensis, Mull. 

 Cionella subcylindrica, Mull. 



