194 BULLETIN OF THE 



body whorl, by the longer crest behind the aperture, which in contracta disap- 

 pears in about the middle of the (height of the) whorl, and by the wanting 

 constriction, especially in the columellar wall, not to speak of the size and 

 shape of the whole shell. The lamellge also show some marked differences, 

 such as the presence of a high basal, the shorter columella not reaching the 

 base, but with relatively larger horizontal part, the bifurcation of the parietal 

 and the presence of a supra- palatal, the last just as it is in P. armifera. 



It must be added here that the specimen first obtained from Minnesota in 

 several respects differs from those found in Illinois and 

 Iowa, which I consider as typical ; by its size which is one 

 third smaller, by the basal lamella developed in a peculiar 

 way, being rather longer at the truncated top than at its 

 foot, and by the stronger, thicker palatal lamellae. Yet, as 

 there was only one specimen, it was liable to be an individ- 

 ual peculiarity, even then of interest. Should, however, 

 more specimens be found with the same configuration, they 

 would represent a distinct and well characterized variety ; 

 Pupa noiringeri, possibly it is a peculiar northern form, 

 enlarged New Philadelphia, Ohio, June, 1889. 



The above is a description by Dr. V. Sterki * of a Pupa received by him 

 from Winona, Minn., and Northern Illinois. He kindly furnished me the 

 above figure. 



Pupa rupicola, SAY. 



corticaria, SAT. 

 Vertigo milium, GOULD. 







ovata, SAY. 



Succinea retusa, LEA. 

 ovalis, SAY. 

 avara, SAY. 

 aurea, LEA. 

 obliqua, SAY. 



SOUTHERN REGION SPECIES. 



Glandina Vanuxemensis, LEA. 

 truncata, SAY. 

 bullata, GOULD. 

 decussata, PFEIFFER. 

 Texasiana, PFEIFFEE. 



Lingual membrane as usual in the genus. Teeth 35-1-35. Central small, 

 narrow, with a single blunt rounded cutting point. See Plate IX. Fig. G. 



i The Nautilus, Vol. III., No. 4, p. 37, August, 1889. 



