The Nautilus. 



Vol. hi. APRIL, 1890. No. ]2. 



DESCRIPTIONS OF NEW VARIETIES OF NORTH AMERICAN 

 LAND SHELLS. 



BY HENRY HEMPHILL. 



(1.) Patula strigosa Gld. var. subcarinata. 



The shell in general form resembles a large coarse elevated or 

 depressed Cooperi. It has six whorls, well rounded above and 

 beneath, and subcarinated at the periphery. The body whorl has 

 two revolving dark bauds, one above and the other below the 

 periphery; sometimes the upper band spreads over the shell to the 

 suture forming a dark chestnut zone that fades out as it passes 

 toward the apex. The lip is simple, thickened, its terminations 

 joined by a callus ; aperture obliquely subangulate ; the suture is 

 well impressed. 



Height of the largest specimen 1 inch, breadth Ij inch. 



Height of the smallest specimen | inch, breadth 1 inch. 



Habitat, Rathdrum, Idaho. 

 (2.) Patula strigosa Gld. var. bicolor. 



This shell is a colored variety of the above. 



It may be characterized as being of a general dark horn color 

 mingled with dirty white ; there are occasional zones of dark horn 

 color above and fine dark lines beneath, but no defined bands. In 

 some of the specimens the light color prevails, in others the horn 

 color spreads over the shell in irregular patches. 



Height i inch, breadth li inch. 



Habitat, Rathdrum, Idaho. 



