44 LAND AND FRESH WATER MOLLUSKS 



This name is doubtless one given by Sowerby to some unknown 

 shell, as it is as certain as almost anything can be, that Helix gularis 

 Say was never collected in the region referred to. 



Genus Pristiloma Ancey. 

 Pristiloma lansingi Bland. 



Zonites lansingi BLAND, Ann. Lye. Nat. Hist. N. Y., xi, p. 74, figs, i, 2, 1875. 

 Microphysa lansingi BINNEY, Man. Am. Land Sh., p. 90, figs. 55, 56, 1885. 

 Pristiloma lansingi PILSBRY, Class. Cat., p. 29, 1898. 



Range. Oregon, Washington, British Columbia. 

 Astoria, Oregon ! Seattle, Wash. ! common at Victoria ! and Nan- 

 aimo ! Vancouver Island. 



Pristiloma stearnsii Bland. 



Zonites stearnsii BLAND, Ann. Lye. Nat. Hist. N. Y., xi, p. 76, fig. 3, 1875, 



(Astoria, Oregon). 

 Microphysa stearnsii BINNEY, Bull. Mus. Comp. Zool., xi, No. 8, p. 147, pi. 



ii, figs. N, o, 1883 ; xiii, No. 2, p. 44, 1886. 

 Pristiloma steamsi BINNEY, Bull. Mus. Comp. Zool., xxn, No. 4, p. 176, 



1892. 



Range. Columbia River to Dyea, Alaska. 



Astoria and Portland, Oregon ! Olympia, Wash. ! Comox ! Union 

 Bay ! and Salt Spring Island, British Columbia ; Killisnoo, Por- 

 tage Bay, Anuk, Dyea valley, Klehini and Klukwan, Southeastern 

 Alaska. 



Pristiloma taylori Pilsbry. 



Pristiloma taylori PILSBRY, Proc. Acad. Nat. Sci. Phila., for 1899, p. 185, pi. 

 ix, figs. 6, 7, 8 (Nanaimo). 



Range. Oregon, Washington and British Columbia at Nanaimo, 

 Vancouver Island. 



*Pristiloma pilsbryi Vanatta. 



Pristiloma pilsbryi^ ANATT 'A, Proc. Acad. Nat. Sci. Phila., for 1899, p. 120, 

 fig. I (3 views). 



Range. Portland, Oregon. 



*Pristiloma idahoense Pilsbry. 



Pristiloma idahoense PILSBRY, Proc. Acad. Nat. Sci. Phila., for 1902, p. 593, 

 (Weiser Canyon). 



Range. Idaho, in Washington and Boise counties at Weiser 

 Canyon and Big Payette Lake. 



This and the preceding species will probably be found within our 

 area when it is thoroughly explored. 



