138 PHYSA. 



* Cylindrical species. 



14. PHYSA VENUSTA, Lea. 



Plate 7, fig. 5. 



Shell subcylindrical, very thin, transparent, 

 shining, white ; spire short, pointed ; sutures 

 slightly impressed ; whorls four, slightly con- 

 vex, the last one very large ; aperture large, 

 elongately ovate, within the margin brownish ; 

 outer lip acute, sinuous and slightly expanded ; 

 columella slightly impressed. 



Length 14, diam. 6*5 mill. 



Oregon. 



This species is a member of the group to 

 which Ph. gijrina, Say, belongs ; it is larger, 

 however, paler in tint, and the lip is more 

 arched. 



(54) 



