174 BULLETIN OF THE 



Patula Strigosa, var. rugosa, Hemphill. 



Shell umbilicated, elevated or globosely depressed, of a dull brown ash-color; 

 surface rough, covered with coarse irregular oblique striai, and microscopic re- 

 volving lines; whorls 5, convex, with or without one or two narrow faint revolv- 

 ing bands. In most of the specimens the bands are obsolete; spire elevated, 

 obtusely conical ; suture well impressed ; umbilicus large, deep ; aperture nearly 

 round ; peristome simple, thickened, its terminations approaching and joined by 

 a thin callus. Height of the largest specimen f inch, greatest diameter 1 inch. 

 Height of the smallest specimen ^ inch, greatest diameter | inch. 



New Brigliam City, Utah. 



A large rough robust form, with very convex whorls. Some of the specimens 

 so closely resemble solitnria, Say, that one not well acquainted witli both forms 

 would be easily deceived, and refer it to that species. In its adolescent state the 

 lip is very thin or easily broken, and on the surface of the adult shells these frac- 

 tures give it a rougli and uneven appearance. 



Patula strigosa, var. rugosa, Hemphill, The Nautilus, 1890, Vol. IV. p. 16. 



« 

 The above is Hemphill's description. 



Patula strigosa, var. carnea, Hemphill. 



Shell umbilicated, greatly depressed, dark horn-color, rather solid, shining, sur- 

 face somewhat uneven and covered with irregular oblique striae ; whorls 5^, con- 

 vex, the last faintly subcarinated in the depressed specimens, falling in front, 

 sometimes faintly banded, but most of the specimens are plain and without bands ; 

 spire subconical, apex obtuse ; suture well impressed, umbilicus large ; aperture 

 circular; peristome simple, thickened, its terminations well approached and joined 

 by a callus. Heigiit | inch, greater diameter J, lesser f inch. 



Near Salt Lake, Utah. 



Patula strigosa, var. carnea, Hemphill, The Nautilus, Vol. IV. p. 15, June, 1890. 

 The above is Hemphill's description. 



Patula strigosa, var. fragilis, Hemphill. 



Shell umbilicated, elevated or globosely depressed, translucent, thin, fragile, 

 somewhat shining, of a dark horn-color, surface covered by fine oblique striae; 

 whorls 5, convex, the last descending in front and striped by two dark chestnut 

 bands, one above and the other below the periphery ; suture well impressed ; aper- 

 ture oblique; peristome simple, thickened; umbilicus moderate, deep, partially 

 covered by the reflt'Cted peristome at the columella. Height of the largest speci- 

 men /^ inch, greatest diameter J inch, lesser f inch. 



Near Franklin, Idaho, among red sandstone. 



A very thin and almost transparent variety of the very variable strigosa. By its 



