FAMILY PUI'IU^ 



31 



Vertigo boUesiana var. arthuri vON MARiii.NS, Sitzber. Ges. Naturf. Fr. zu 

 Berlin, 1882, No. 9, p. 140. 



Range. — Northern United States east of the Rocky Mountains and 

 northward. 



Ottawa, Ontario; Manitoba; Upper Missouri at Fort Bert hold ; 

 Helena, Montana. 



The variety artliiiri is catalogued from Arctic America by an over- 

 sight, in IJinncy's Third .Supplement, p. 1S5. It is really from the 

 Little Missouri in Dakota. 



Vertigo ventricosa Morse. 



lithmia ventricosa Morse, Ann. N. Y. Lye. N. Hist., viii, p. i, figs. 1-3, 1865. 

 Vertigo ventricosa Morse, .^m. Xat., i, p. 966, 



figs. 61, 62, 1868. 

 Vertigo 2'entricosa etatior St'EWKi, Nautilus, XI, 



p. 120, Feb., 1898. 

 Vertigo gouhiii lagganensis Pilshkv, Proc. 



Acad. Nat. Sci. Phila , for 1899, p. 314, 



fig. I. 

 Vertigo approximuns Sterki, fide Pilsbry. 



Range. — Qiiebec and ALiine to Illinois 



and Alberta , Alanitoba ; variety elatior at ^ , - . 



■' fiG. 19. \ erta^o I'entricosa 



Laggan, Alberta. (magnified). 



Vertigo binneyana Sterki. 



Vertigo binneyana Sterki, Proc. Acad. Nat. Sci. Phila., for 1890, p. 33; 

 Nautilus, III, p. 125, March, 1890. — Pilsbry, Proc. Acad. Nat. Sci. 

 Phila., for 1899, p. 315, fig. 2 ; Nautilus, iv, p. 39, pi. i, fig. i, Aug., 

 1890. 



Range. — Rocky Mountain region from Albuquerque, New Mexico, 

 to Manitoba. 



Seattle, Wash. ; Helena, Montana ; Winnipeg, Manitoba. 



Figs. 20-22. Vertigo ovata, showing variations in teeth (see next page). 



