EUROPEAN SPECIES OP VERTIGO. 205 



is supported, the latter will stand as V. gemsii parcedentata, 

 as genesii was the first to be described. 



Kobelt placed the species in Pupilla on account of Gredler 's 

 note on the tentacles. 



D. Geyer, who collected V. genesii at the original locality, 

 under the guidance of Gredler, writes as follows: 



"Vertigo genesii Gredler is not invariably toothless ( l ohne 

 alle Fait en' Gredler), but 4-toothed examples occur with the 

 toothless ones; 1 tooth on the parietal wall, 1 on the colu- 

 mella and 2 in the palate, showing through outside. These 

 last two develop last, and examples about to become complete 

 therefore appear to be transitional, with only 2 or 3 teeth. 

 V. genesii is therefore similar in dentition to Pupilla, mus- 

 corum, steini, triplicata and others. The station of the snail 

 is at the Salten near Jenesien (so the name of the village is 

 pronounced, and so it appears on the charts not 'St. 

 Genesien'), in the neighborhood of Bozen. The snail is not 

 restricted to rocks, as Gredler stated, but also lives on wood, 

 in humid forest openings. 



"F. genesii is not confined to the Salten and Tyrol, but 

 also lives in Germany. Years ago I found 4 specimens in a 

 meadow near Kisslegg in the Wiirtemberian Allgau, and a 

 single 4-toothed Pupa in the debris of the Aach near Wolfegg, 

 9 kilom. northwest of Kisslegg. * * * I see now that these 

 German specimens, also from a humid but far lower station 

 (at Salten about 1200, at Kisslegg 647 m.), agree completely 

 with those of the Tyrol, being only a little lighter in color. ' ' 



Geyer further states that genesii and parcedentata "show 

 the same variability in dentition, both having to 4 teeth, 

 but in size, contour, growth and number of whorls they 

 differ from one another decidedly." Yet it must be noted 

 that Geyer compares with Sandberger's fig. 1, which Boettger 

 considered to be really V. alpestris. Geyer considers that 

 parcedentata is a synonym of alpestris; but the small form 

 without columellar or upper palatal folds, which is really the 

 typical parcedentata, appears to support the view of Sand- 

 berger and Boettger, that parcedentata is specifically not 

 separable from genesii. 



