EUROPEAN SPECIES OP VERTIGO. 191 



thin callus of the same color behind the aperture; suture 

 strongly ascending anteriorly. Aperture little oblique, semi- 

 ovate, rounded at the base, entirely toothless; peristome 

 slightly spreading, the right margin strongly curved above; 

 columellar margin a little straightened, reflected-spreading 

 above; the right margin thinly labiate within. Length 2% 

 to 3, diam. iy 2 to 1% mm. (Westerlund). 



Siberia: Baklanowskij, Jenesei, lat. 64 25' N. 



Pupa (Vertigo) 'arctica Wallenb., var. extima WESTERLUND, 

 Nachr. d. Malak. Ges., viii, 1876, p. 99; Sibiriens Land- och 

 Sotvatten-mollusker, p. 42, in Kongl. Svenska Vet. Akad. 

 Handl. xiv, no. 12, 1877. 



The shell appears to be larger than other toothless forms 

 of the V. modesta stock, about the size assigned for V. hoppii. 



67&. Vertigo arctica tatrica (Hazay). 



Shell small, dextral, cylindric, obtuse, corneous-buff, glossy. 

 Aperture semiovate, 2 or 3 toothed. Whorls 5%. Alt. 2, 

 diam. 1 mm. 



The small shell has a long-cylindric shape, is glossy, trans- 

 lucent, of yellowish horn-color; spire blunted. The 5% con- 

 vex whorls increase very slowly, the last being scarcely notice- 

 ably wider than the penult, occupying scarcely % the length 

 of the shell. Aperture semiovate, having 2 or 3 denticles: 

 one sharp, lamelliform, stands on the parietal wall, a smaller 

 on the columella and a small punctiform tooth on the inner 

 wall [of the outer lip] ; the last is often lacking. The outer 

 margin is evenly curved, not impressed (Hazay). 



Carpathians: Hohen Tatra, in Kotlina valley, on old tree 

 trunks. 



Pupa tatrica HAZAY, Jahrb. d. Malak. Ges. xii, 1885, p. 

 32 ; Eszaki Karpat. p. 356. 



This species stands nearest to Pupa leantina Gredl., which 

 is said to have 2 denticles, but differs by its conic shell with 

 only 41/2 whorls and the impressed peristome. It is distin- 

 guished from Pupa arctica Wallenberg, which also has 3 

 denticles, by the shape, increase of the whorls, the peristome 

 not bent in (Hazay). 



