172 BULLETIN OF THE 



In examining the genitalia I find the base of the duct of the genital bladder 

 greatly swollen along a fifth of the total length of the duct. 



Mr. Hemphill (The Nautilus, 1890, p. 133) thus describes it : — 



The shell in general form resembles a large, coarse elevated or depressed Cooperi' 

 It has six whorls, well rounded above and beneatii, and subcarinated at the periph- 

 ery. The body whorl lias two revolving dark bands, one above and the other 

 below the periphery ; sometimes the upper band spreads over the shell to the su- 

 ture, forming a dark chestnut zone that fades out as it passes toward the apex. 

 The peristome is simple, thickened, its terminations joined by a callus ; aperture 

 obliquely subangulate; the suture is well impressed. Height of the largest speci- 

 men 1 inch, breadth 1^ inches ; height of the smallest specimeu | inch, breadth 

 1 inch. 



Rathdrum, Idaho. 



An authentic specimen is figured in the Third Supplement. 



Patula Strigosa, Gould, var. bicolor, Hemphill. 

 Plate IV. Fig. 7. 



Tins shell is a colored variety of the last. 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 | inch, breadth IJ inches. 



Rathdrum, Idaho. (Hemphill.) 



Patula strigosa, var. hico/or, Hemphill, The Nautilus, 1890, p. 183. 

 An authentic specimen is figured. , 



Patula strigosa, Gould, var. iactea, Hemphill. 

 Plate IV. Fijf. 8. 



This is a beautiful clear milkwln'e shell, with 5^ whorls, subcarinated at the 

 periphery. In the elevated forms the aperture is nearly circular, as broad as high ; 

 but in the depressed forms the aperture is broader than high, obliquely suban- 

 gulate. The lip is simple, thickened, its terminations joined by a heavy callus, — 

 the tliickening of the lip and callus is a shade darker than the body of the shell. 

 Height of the largest specimen 1 inch, breadth IJ inches. 



Rathdrum, Idaho. 



The above varieties represent a colony of the largest specimens of the strigosa 

 group tliat I have oollpcferl. They are an important and very interesting addition 

 to the series, and serve to confirm my previous views on the relationship of what I 

 call the strigosa group. This colony inhabits open places in the dense pine forests 

 of the mountains, overgrown with deciduous bushes. They hibernate among 



