44 LAND AND FRESH WATER MOLLUSKS 



This name is doubtless one given by Sovverby to some unknown 

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

 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 Bin'ney, Man. Am. Land Sh., p. 90, figs. 55, 56, 1885. 

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



Range. — Oregon, Washington, British Columbia. 

 Astoria, Oregon 1 Seattle, Wash. ! common at Victoria ! and Nan- 

 aimo ! Vancouver Island. 



Pristiloma steamsii Bland. 



Zonites skarnsii'Qi.kli-o, Ann. Lye. Nat. Hist. N. Y., XI, p. 76, fig. 3, 1875, 



(Astoria, Oregon). 

 Microphysa steamsii Binney, Bull. Mus. Comp. Zool., xi. No. 8, p. 147, pi. 



II, figs. N, o, 1883; XIII, No. 2, p. 44, 1886. 

 Pristiloma stearnsi Binnev, Bull. Mus. Comp. Zool., xxii. No. 4, p. 176, 



1892. 



Range. — Columbia River to Dyea, Alaska. 



Astoria and Portland, Oregon 1 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 PiLSBRV, Proc. Acad. Nat. Sei. 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 pilsbry iVkVPLTTK. Proe. Aead. Nat. Sci. Phila., for 1899, p. 120, 

 fig. I (3 views). 



Range. — Portland, Oregon. 



♦Pristiloma idahoense Pilsbrj'. 



Pristiloma idahoense Pilsbry, Proe. Aead. Nat. Sei. 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. 



