PHYSA. 157 



pressed ; whorls five, the hast harge ; aperture 

 rounded ; outer Hp reguhirly expanded, white 

 and thickened within the margin ; cohnneUa 

 thickened and impressed in the middle, and 

 furnished with a fold. 



Lentrth 13, diam. 8*5 mill. 



Alexandria, La. 



This species is nearly allied to Ph. Warren- 

 iana, but is smaller, and the spire more ele- 

 vated ; the columella also is more incurved 

 towards its base. 



37. PHYSA GROSVENORII, Lea. 



Plate 8, fig. 13. 



Shell ovately fusiform, nearly straight, 

 somewhat inflated, white or pale straw-yellow, 

 polished ; spire somewhat exserted ; sutures 

 impressed ; whorls five, the last one rather 

 large ; aperture oval, rather large ; outer lip 

 somewhat expanded, thickened under the 

 margin ; columella thickened, very much im- 

 pressed, folded and very much twisted. 

 (73) 



