134 PHYSA. 



9. PHYSA DIAPHANA, Tryon. 

 PlateG, fig. 15.. 



Shell smooth, oval, lengthened ; spire of 

 moderate length, suture impressed ; body 

 whorl four-fifths of the entire length, some- 

 what cylindrical, very fragile, growth lines 

 crowded, but minute ; columellar lip very 

 short, commencing low down, very much ap- 

 pressed and much twisted to the right towards 

 the base, polished and Yevy pearly. 



Length 13, diam. 7 mill. 



California. 



Resembles Ph. sparsestrlata, nob., in form, 

 but is at once distinguished from that species 

 by being smoother, with the growth lines 

 more crowded, and from that and all other 

 Physoe by the very peculiar columella, which 

 curves diagonally to the right at such an angle 

 as to make it appear almost truncate, 

 (50) 



