26 BULLETIN OF THE 



Zonites minusculus, Binnet. 

 Universally distributed. 



Zonites milium, Morse. 



Not actually received from the Central Province, but no doubt existing there, 

 as it has been found over the Eastern and Californian Provinces. Probably a 

 universally distributed species. 



Zonites fulvus, Dkap. 



A universally distributed species, received from numerous localities in Utah, 

 Nevada, and Colorado. 



Vitrina Pfeifferi, Newc. 



• 



A species of the California Province. I have received it also from Logan 

 Canon, Weber Cknon, St. George, and Salt Lake City, Utah ; Austin and 

 White Pine, Nevada : White Bird Creek, Idaho. (Hemphill.) 



Patula solitaria, Say. 



Plate I. Fig. 10. 



A species of the interior region of the Eastern Province. I have received 

 it also from White Bird Creek, Idaho ; Walla Walla, Washington Territory ; 

 Weston, Oregon (Hemphill) ; in addition to the localities given in Vol. V. 

 These last two points are about twenty-five miles apart, at the foot of the Blue 

 Mountains, one hundred and fifty miles from the Dalles. 



The specimen figured, which is unusually elevated, is from Salmon River 

 Mountains, Idaho (Hemphill). A uniformly brown specimen with narrow 

 white band was also found. 



One of the most unlocked for and interesting facts in the geographical distri- 

 bution of our land shells is the westward range of P. solitaria, reaching through 

 the Central Province into the Pacific Province to within a few miles of the 

 Pacific Ocean. (See extracts from Mr. Hemphill's letter on pp. 27, 28.) 



Patula strigosa, Gould. 



Plate II. 



This is the most variable species found in North America. The original 

 specimen (see PI. XXVT. a), found on or near the Pacific Coast at Puget Sound 

 by the naturalists of the Wilkes Exploring Expedition, is large, almost discoidal, 

 with widely open umbilicus. It could not possibly occur to me that there were 

 any relations between it and the small, globose, narrowly umbilicated, highly 



