158 PHYSA. 



Length 7*5, diam. 5 mill. 



Santa Rita Valley, Kansas. 



Smaller, less inflated and having one more 

 whorl than Ph. Blandii, which it otherwise 

 closely resembles. 



38. PHYSA BREVISPIRA, Lea. 



Plate 8, fig. 8. 



Shell smooth, broad elliptical, whitish, 

 somewhat transparent, inflated; spire very 

 short, obtuse, and scarcely exserted; whorls 

 three, the last one large and inflated ; outer 

 lip acute, the inner margin being thickened ; 

 aperture very large and dilated ; columella 

 thickened, impressed and twisted. 



Length 9, diam. 6*25 mill. 



Ottawa River, Canada West. 



More obtuse at the apex than Ph. gJohosa, 

 Hald. The aperture is about six-sevenths the 

 length of the shell. 



C74) 



