288 GEOLOGY. 



Hyalina significans, Bland, Nemaha and Otoe Counties. 

 Hyalina lineata? Say, Douglas and Otoe Counties. 

 Macrocyclis concava, Say, Douglas and Otoe Counties. 

 Helix solitaria, Say, Otoe an \ Burt Counties. 

 Helix strigosa, Gould, Otoe and Burt Counties. 

 Helix alternata, Say, all Eastern Nebraska. 



Helix cumberlandiana, Lea, Middle Loess in Nemaha and Otoe 

 Counties. 



Helix cooperi, W. G. B., Douglas and Washington Counties. 



Helix striatella, Anthony, Dixon and Dakota Counties. 



Helix labyrinthica, Say, all Eastern Nebraska. 



Helix hubbardi, Brown, Middle Loess in Nemaha County. 



Helix auriformis, Bland, Middle Loess in Otoe County. 



Helix tholus? G. G. Binney, Middle Loess in Douglas County. 



Helix fastigans, L. W. Say, Middle Loess in Otoe County. 



Helix jacksonii? Bland, Middle Loess in Otoe County. 



Helix hazardi? Bland, Middle Loess in Douglas County. 



Helix dorfeuilliana, Lea, Middle Loess in Cass County. 



Helix pustula? Fer, Middle Loess of Cass County. 



Helix spinosa, Lea, Middle Loess of Harlan County. 



Helix edgariana? Lea, Middle Loess of Richardson County. 



Helix stenotrema, Fer, Otoe and Cass Counties. 



Helix hirsuta, Say, Dixon and Cass Counties. 



Helix monodon, Rackett, all Eastern Nebraska. 



Helix palliata, Say, all Eastern Nebraska. 



Helix abstricta? Say, all Eastern Nebraska. 



Helix appressa? Say, Otoe and Nemaha Counties. 



Helix inflecta, Say, all Eastern Nebraska. 



Helix tridentata? all Eastern Nebraska. 



Helix fallax, Say, all Eastern Nebraska and Republican Valley. 



Helix albolabris, Say, Eastern Nebraska and RepublicanValley. 



Helix multilineata, Say, all Eastern Nebraska. 



Helix pennsylvanica, Green, Douglas County. 



Helix elevata, Say, Eastern Nebraska and Republican Valley. 



Helix exoleta, Binney, Eastern Nebraska andRepublican Valley. 



Helix roemeri, Pfeifer, Middle Loess of Richardson County. 



Helix thyroides, Eastern Nebraska and Republican Valley. 



Helix clausa, Say, Eastern Nebraska. 



Helix jejuna? Say, Richardson County. 



Helix profunda, Say, all Eastern Nebraska and Republican Valley. 



