LAURIA. 



55 



scarcely contracted; umbilical opening round, deeply pene- 

 trating. Aperture large, ovate-rounded, free ; one small tooth 

 only on the parietal wall. Peristome sharp, little reflected. 

 Length iy 3 , diain. % lines. Animal blackish, lighter beneath 

 (Kuester). 



Sardinia : in the pores of lava blocks of the tumbled-down 

 crater of an extinct volcano near Nurri ; few specimens (Kues- 

 ter) ; waterfall at Laeoni (Caroti). 



Pupa vulcanica Kuester, Conchyl. Cab., 18. ., p. 18, pt. 2, 

 f. 23, 24. — Paulucci, Bull. Soc. Malac. Italiana, viii, 1882, p. 

 282. — Pupa rupestris Kuester, Anton, Verzeichniss, p. 47, no. 

 1736 ; not of Philippi. 



This appears to be a thin, anconostoma-like form, perhaps 

 closer to sempronii, from a station deficient in lime. Kues- 

 ter 's size-figure is 3.3 mm. long. Mme. Paulucci states that 

 fine, oblique striae are distinctly seen under sufficient magnifi- 

 cation, and that the immature stage has a second lamella in- 

 ward on the columella. So far as I can learn, it has been col- 

 lected only twice, and is one of the rarest European species. 



4. Lauria sempronii (Charp.). PI. 7, figs. 2, 3. 



The shell is most minutely perforate, shortly rimate, cylin- 

 dric-tapering with blunt, rounded summit, transparent pale 

 tawny-olive, glossy, smooth. The whorls are moderately con- 

 vex, the last narrowly rounded basally, the base little com- 

 pressed only near the lip. The aperture is truncate-oval. 

 Peristome is very narrowly reflected and a little thickened at 

 the inner edge ; outer lip sinuated above. A small, short an- 

 gular lamella stands upon the parietal wall near the outer 

 lip-insertion, with which it is very weakly connected in the 

 most strongly developed examples. Columella smooth. 



Length 3.1, diam. 1.4 mm. ; 6 whorls. Lombardy. Fig. 3. 



Length 2.4, diam. 1.5 mm. ; 5y 2 whorls. Lombardy. Fig. 2. 



Entire Alpic region, Sardinia, Balkan Peninsula and Cau- 

 casus. 



Pupa sempronii Charpentier, Cat. Moll. terr. et fluv. 

 Suisse, in Nouv. Mem. Soc. Helvet. Sci. Nat., i, 1837, p. 15, 

 pi. 2, f. 4 (on granitic rocks around Gondo, on the southern 



