24 LAND AND FRESH WATER MOLLUSKS 



Pyramid Island, Lynn Canal, Alaska, fide Reinhardt. 



This form, collected by Dr. Krause, was identified by Dr. Rein- 

 hardt with NevilPs species and is included here solely on his authority, 

 as I have not seen specimens. 



Genus Polygyra Say. 

 Polygyra devia Gould. 



Helix devia GOULD, Proc. Boston Soc. Nat. Hist., n, p. 165, 1846. BINNEY, 



Land and Fw. Sh. N. Am., I, p. 152, fig. 259, 1869. 

 Helix baskervillei PFEIFFER, Proc. Zool. Soc. London, p. 130, 1849. REEVE, 



Conch. Icon., Helix, fig. 684, 1852. 

 Polygyra devia PILSBRY, Class. Cat. N. Am. Landsh., p. n, 1897. 



Range. Washington and Idaho, north into British Columbia. 

 Sumas Prairie, B. C. ; Esquimalt, Vancouver Island. 



Polygyra columbiana Lea. 



Helix columbiana LEA, Trans. Am. Phil. Soc., vi, p. 89, pi. xxm, fig. 75, 



1839. BINNEY, Terr. Moll., n, p. 169, pi. v, 1851. 

 Helix labiosa GOULD, Proc. Boston Soc. Nat. Hist., n, p. 165, 1846 ; Expl. 



Exp. Moll., p. 67, fig. 35, 1852. 

 Polygyra columbiana PILSBRY, Class. Cat. N. Am. Landsh., p. n, 1897. 



Range. Monterey Bay, California, to Yakutat Bay, Alaska, in the 

 moist wooded region west of the Rocky Mountains. 



Mountains of Idaho, western Montana and Washington ; Vancouver 

 Island at Victoria ! Nanaimo and Nootka ; British Columbia mainland 

 on banks of Fraser River (Lord) and Skeena River ! (Osgood) ; Har- 

 bledown and Fender Islands, Johnstone Strait ; Union Bay ! Port 

 Simpson; and Cumshewa Inlet, Queen Charlotte Islands ! B. C. ; in 

 Alaska at Cape Fox ! Annette Island, Killisnoo, Sitka ! Lynn Canal ; 

 Biorka Island ! Chilkat valley ! Lituya Bay ! Yakutat ! 



There are several varieties of this widespread and familiar species. 

 First, the type, subconic rather elevated and small, with narrow re- 

 flexed lip. Lea's specimen was decorticated and showed no signs of the 

 hairs with which the shell is usually covered, but this was accidental ; 

 some specimens normally show hardly a trace of the hairs which are 

 usually so conspicuous. The second variety, P. labiosa Gould, is 

 larger, more depressed relatively, with a broader, somewhat flexuous 

 reflected lip. This form is more prevalent in the interior of Washing- 

 ton, Idaho, etc., and more often has a parietal tooth or trace of a tooth. 

 The variety santacruzensis is in form more like the type but much 

 smaller, thin, lighter colored, with a sparser pelage, and about half 

 the specimens have a trace of a parietal tooth, while in a lot of about 

 seven hundred columbiana, from Sitka, I found only one specimen 



