166 PHYSA. 
gives the shell a deformed appearance. A 
broad, thick deposit of callus on the body 
whorl extends to the base of the columellar 
lip, which is twisted and appressed. 
Length 10, diam. 4 mill. 
Grand Rapids, Mich. 
Subgenus PH YSELLA, Haldeman. 
44, PHYSA GLOBOSA, Hald. 
Monog. p. 38, t. 5, fig. 10—12. 
Subgenus PH YSODON, Haldeman. 
45. PHYSA MICROSTOMA, Hald. 
Monog. p. 39, t. 4, fig. 13—14. 
(82) 
