314 



PROCEEDINGS OF THE ACADEMY OF 



[1899. 



NOTES ON A FEW NORTHWEST AMERICAN LAND SNAILS. 

 BY HENRY A. PILSBRY. 



Through the kindness of the Rev. George W. Taylor, I have 

 recently been able to examine some of the smaller land snails of 

 Alberta and British Columbia, and to compare them with types or 

 typical specimens of species originally described from the United 

 States. In most cases the northwestward extension of these forms 

 has already been recorded by Mr. Taylor, in several valuable lists 

 published by him in Canada. A feAV have not hitherto been 

 noticed in print. 



Vitrea binneyana Morse. 



The specimen from Nanaimo, Vancouver Island, agrees exactly 

 with those from Maine, but the shell reported from Nanaimo as 

 Patula (Pla)iogyra) asteriscus is not that very distinct Maine shell, 

 but Pimdum clapjn Pilsbry. This extends its northward range a 

 considerable distance. Mr. Taylor believes that he collected the 

 typical asteriscus at Comox, B. C, twelve years ago. I have not 

 seen these specimens. 



Vertigo gouldii lagganensis n. v. Fig. l. 



Resembles V. gouldii in size and general characters, but the 

 form is more slender ; palatal teeth subequal, the lower one more 

 immersed ; upper segment or ' ' auricle ' ' of the outer lip much 

 more pronounced. Alt. 2.1, diam. of last whorl above aperture 

 1.17 mm. 



Laggan, Alberta, collected by the Rev. George W. Taylor. 



