74 TRUNCATELLINA. 



findet sich in der Schweiz (Hartmann, in Neue Alpina, i, 

 1821, f. 220, pi. 2, fig. 5). 



The figure is so small and indistinct that it is quite useless. 

 Whether the species is identical with T. rivierana cannot be 

 determined positively ; the assigned size is too small. 



Vertigo pupula Held, Isis, von Oken, 1837, p. 308, nps. 15 

 and 1, was a substitute for Pupa minutissima Hartm., without 

 other description, Bavaria. 



" [Pupa] pusillima Zgl. (P. minutissima Hartm.?)." 

 MENKE, Synops. meth. Moll. Mus. Menkeano, 1828, p. 18. It 

 has not been further defined. 



[Vertigo muscorum Drap.] Var. dentiens Moq. (PL 8, fig. 

 7, copied from Moq.-Tand.). Aperture with 1, rarely 2 tooth- 

 like folds on the middle of the penult whorl. Toulouse, 

 Montpellier (Moquin-Tandon, p. 399 r pi. 28, f. 24). Probably 

 = T. rivierana or var. scharffi. 



Little-known Italian forms of the T. rivierana series. 



Vertigo monodonta Pollonera. Similar to the preceding 

 [muscorum Drap.], but a little shorter; whorls 5% to 6; 

 aperture with a deeply placed, drop-shaped palatal tooth. 



Italy: V. Dora Riparia, collina di Rivoli, in the alpine re- 

 gion of Piedmont. 



V.[ertigo] (Ist[}imia]) monodonta POLLONERA, Atti della 

 R. Accad. delle Scienze di Torino, xx, 1885, p. 685. 



Vertigo dinii De Stefani. Shell minute, with a small um- 

 bilicus, eylindric, pellucid, thin, tawny, a little convex, more 

 inflated in the middle, slightly tapering above and below, 

 longitudinally closely striate, the striae oblique, visible under 

 a lens, well raised ; apex rather obtuse. Whorls 6y 2 , the first 

 1% small, the rest nearly equal, the last a little tapering, 

 somewhat larger, rather convex, slowly ascending to the aper- 

 ture. Aperture rounded, subtetragonal below, frequently 3- 

 toothed: one very long tooth in the upper lip, sometimes 2, 

 of which the upper is very short; in the columellar lip one, 

 and one in the palate [i. e., the parietal wall] ; peristome 

 simple, a little expanded, interrupted above. Length 1.5, 

 width 0.5 (De Stefani, Bull. Soc. Malac. Italiana, ix, 1883, p. 

 143). 



