BULLEN : FOSSIL NON-MAKINE MOLLUSCA FEOM DOVEK. 



165 



HoLocENE {continued). 



Vitrea nitida, Miill. (1 specimen). 



Selicella Itala, Liain. 

 ,, caper ata, Mont. 

 ,, Carthusiana, Miill. 



Sygromia hispida, Linn. 



,, rw/6scews,Penn. (abundant). 



Vallonia pulchella^ Miill. (abun- 

 dant). 



Selix aspersa, Miill. (not very- 

 abundant). 



Selix nemoralis, Linn. (2 speci- 

 mens). 



Cochlicopa lubrica, Miill. 



CcBcilianella acicula, Miill. 



Pupa cylindracea, Da C. 



Pupa muscorum, Linn, (abundant). 

 Vertigo pygmcBa, Drap. (abundant). 

 Clausilia hidentata, Strom. (1 speci- 

 men). 



Pleistocene. 



AgrioUmax agrestis, Linn. 



JSygromia hispida, Linn. 



Vallonia pulchella, Miill. 



Helicigona arhustorum, Linn. 

 (2 specimens). 



Cochlicopa lubrica, Miill. (1 speci- 

 men). 



Pupa muscorum, Linn. 



Drap, (1 specimen). 



My sincere thanks are due to Mr. B. B. Woodward and Mr. A. S. 

 Kennard, for their help in identifying critical specimens and in 

 modernizing my nomenclature. 



