152 AGABDHIA. 



columella, below the principal lamella, and sometimes want- 

 ing (Gredler). 



Differs from the preceding [biplicata] by the paler, whitish- 

 yellow shell; vertical aperture; peristome white, the outer 

 margin not toothed, but a little convex above the middle, and 

 by generally having another deeply placed lamella on the 

 base of the columella. 



Length 4% to 5, diam. iy 2 mm. (Pollonera). 



Length 4.45, diam. 1.5 mm. ; 9 whorls (Trentino specimen). 



Southern Tyrol: Castelfondo in the Nonsberge (Herrn Aus- 

 serer; type loc). Italy: Verona and the Friuli in Veneto 

 (Pollonera). Carinthia: Azalla etc. in the Kanaltal (Ress- 

 mann, for ressmanni) . In the Trentino on the outlying Vene- 

 tian Alps and in the coastal region as far as Malborghet 

 (Kobelt). 



Pupa biplicata var.? excessiva Gredler, Verh. zool.-bot. 

 Ges. Wien, 1856, p. 110. — Westerlund, Fauna, iii, 1887, p. 

 89. — Pupa excessiva Gredler, Pollonera, Bull. Soc. Malac. 

 Ital., xii, 1886, p. 213, pi. 6, f . 5, 6. — Pupa ressmanni var. 

 biplicata Villa, Ressmann, Nachrbl. d. m. Ges., Nov. 1876, p. 

 132 (name and localities; no description). Cf. Gredler, 

 Nachrbl., 1877, p. 4. — Pupa ressmanni Villa of some authors. 

 — Pupa grimmeri Parr, (undescribed) is probably the same, 

 according to Gredler, Nachrbl. 1877, p. 4. 



Though describing it as a variety of biplicata, Gredler 

 thought excessiva a separate species, a conclusion supported 

 by the material before me. Pollonera considered it perfectly 

 distinct specifically from biplicata on the grounds that the 

 difference between these two species is not only in the diminu- 

 tion of the tooth of the outer lip of excessiva, but also in its 

 position, for whilst the tooth of P. biplicata is little above the 

 middle and opposite the columellar lamella, the slight swell- 

 ing which represents the tooth in P. excessiva is situated quite 

 noticeably higher, at the height of the parietal lamella. He 

 points out that weakness of the lip-tooth is a character of the 

 eastern species related to biplicata, whilst in those of the west 

 (Italy, France) this tooth is strong. 



The figures of Pollonera are here reproduced. In some 

 examples the lip-callus is less prominent. 



