po Natural History Bulletin. 



Fenissacia sjibcylindrica, (L.) Binn. Otoe county, Nebraska, 

 and Pottawattamie county, Iowa. 



Pupa armifera, Say. Douglas county, Nebraska, and 

 Pottawattamie county, Iowa. 



Pupa decora, Gld. Otoe county, Nebraska. These are a 

 trifle below the average. 



Pupa muscorum, L. Otoe county, Nebraska. These are 

 like the Lancaster county specimens heretofore mentioned. 



Pupa alticola, Ingersoll. Otoe county, Nebraska, and 

 Fremont county, Iowa. 



Vertigo gouldii, (Binn.) Stimp. Otoe county, Nebraska. 

 These are precisely like the recent specimens from Iowa City, 

 Iowa. 



Succinea verriUi, Bland. Otoe county, Nebraska, and 

 Fremont county, Iowa. This is connected with S. avara by 

 large series of fossils, and seems to be a mere variety of the 

 latter. 



Succinea lineata, W. G. B. Otoe county, Nebraska, and 

 Fremont county, Iowa. 



Succinea obliqua. Say. The smaller, more slender form 

 was collected in Sarpy and Otoe counties, Nebraska, and 

 Fremont county, Iowa. Additional specimens from Douglas 

 county, Nebraska, are like modern types. 



Carychium exiguuui, (Say) Gld. Otoe county, Nebraska. 



LiiniK^a humilis parva. Lea. Otoe county, Nebraska. 

 These specimens are at the lower extreme in size and develop- 

 ment. 



In addition to the foregoing, other species already 

 reported upon were collected, but as they present additional 

 interesting facts they are here given separately. 



Zonites arboreits. Say. A much larger series of this species 

 was obtained from Douglas, Otoe and Sarpy counties, 



