204 EUROPEAN SPECIES OP VERTIGO. 



right from the latter one sees sometimes another quite small 

 denticle which stands nearer the outer lip. The greatest 

 diameter is equal to the height of the last whorl (Siem.). 



So far as I know, this species has not been recognized by 

 any subsequent author; yet it may be known under another 

 name. 



78. VERTIGO GENESII (Gredler). PL 18, figs. 10-12, 17, 18. 



The shell is very small, ovate, obtuse, indistinctly, spaced 

 striate, glossy purplish brown. Whorls 4%, rather convex, 

 high, rapidly increasing, joined by a somewhat impressed 

 suture, the penult large, almost ventricose. Umbilical open- 

 ing moderate. Aperture semirotund, nearly quadratic, with- 

 out any folds. Peristome scarcely expanded, thickened lip- 

 like, bordered with bluish black, the margins connected by a 

 very weak callus, the right margin arched at the insertion. 

 Length %, diam. y 2 li ne [about 1.5 x 1 mm.] . 



Animal raven-black, the tentacles short, contracted in the 

 middle, the anterior pair not indistinct (Pupa ?) . Bears itself 

 quite timidly, but promptly takes courage again (Gredler). 



Tyrol : above St. Jenesien, near Botzen, at 5000 ft. (Gredler). 

 Also in Germany, near Kisslegg, southern Wiirtemberg 

 (Geyer). Sweden: "Westergotland (Linnarsson). 



Pupa genesn GREDLER, Tirol's Land- und Siisswasser- 

 Conch., Verh. z.-b. Ver. Wien vii, 1856, p. 122, pi. 2, f. 3 

 PPR., Monogr. iv, 662. Alaea genesii CLESSIN, Corresp.-Bl. 

 Zool. Min. Vereins Regensburg, 1877 ; Moll, fauna Oesterreich- 

 Ungarns, 1887, p. 279. Pupa genesii WESTERLUND, Nova Acta 

 Reg. Soc. Sci. Upsaliensis, (3), viii, 1871, p. 97; Fauna, iii, 

 p. 130 ( Oestergotland ) . Pupa (Vertigo} parcedentata var. 

 genesn SANDBERGER, 1887. Vertigo genesii GEYER, Nachrbl. ' 

 d. m. Ges. 1912, p. 125. STEUSLOFF, Archiv Ver. Fr. Naturg. 

 in Mecklenburg, 61 Jahr. 1907, p. 68, 71 (dist. in quaternary). 

 PupUla genesn Gredl., KOBELT, Iconogr. (2), viii, p. 82, 

 f. 1512. 



Originally described as toothless, this species varies to forms 

 with 4 teeth. It has been considered a toothless variety of 

 V. parcedentata by Sandberger and Boettger, and if this view 



