50 LAURIA. 



and less tapering at summit. 3 1 /! x V/2 mm. Botanical gar- 

 den of Pisa. (Pupa umbilicata var. gracilis Issel, Mem. Soc. 

 Ital. di Sci. Nat., ii, Milano, 1866, p. 22.) 



Form sub per for at a Bgt. Differs from typical cylindracea 

 by the slightly narrower umbilical perforation, and the nearly 

 rounded instead of compressed base. Bou-Mecid, near Con- 

 stantine, Algeria (Bgt., Malac. Alg., ii, 92). Bourguignat's 

 var. bidentata is the typical cylindracea, having a small colu- 

 mellar lamella. 



Var. montigena "Westerl., 1884. Smaller, blackish, ventri- 

 cose, with short, rounded spire, columella with an emerging 

 fold and deep within a conical tooth. 3x2 mm. Skaralid, in 

 Skane, Sweden (Westerl.). 



Var. vnaqualis Westerlund, 1887. Ovate-cylindric, reddish- 

 corneous; whorls 6, convex, the third from the last much 

 (often nearly doubly) lower than the penult, this being only 

 one-third shorter than the last, which is ventricose behind. 

 Peristome narrow, reddish, outer margin not curved, simple. 

 Parietal lamella hardly thickened above, separated from the 

 outer lip, with an adjacent tooth. Columellar lamella emerg- 

 ing far upon the middle of the columella. 3% x 2 mm. Greece 

 (Westerlund, Fauna, iii, 80). 



L. c. villa ('Charp.' Kuester). PI. 6, fig. 9. Differing from 

 cylindracea "by the greater size, cylindric shape, wider um- 

 bilical cavity (though narrowly perforate), more distinct 

 striation and the relatively longer aperture ; especially also 

 by the absence of a columellar fold. Length 2, diam. % lines ; 

 6 whorls." Neighborhood of Brienz on Lake Pusano, Switr 

 zerland (Pupa villa Charpentier, Kuester, Syst. Conch. Cab., 

 Pupa, 1849, p. 107, pi. 14, f. 32, 33). 



Kuester's figure, reproduced in fig. 9, looks like ancono- 

 stoma. Specimens from Milan and Florence received as villa, 

 appear to be anconostoma. The lip is narrow, and there is no 

 columellar lamella in the adult, stage; size a little smaller 

 than given by Kuester, 3.2 x 1.6 mm. The young have three 

 basal laminae at 90° intervals, thus a trifle more widely spaced 

 than in anconostoma. 



L. c. sabaudina (Locard). Shape of sempronu; 7 slightly 

 convex whorls ; aperture bidentate ; 1 fold above touching the 

 end of the outer lip; 1 little fold on the middle of the colu- 

 mella; peristome interrupted, expanded, reflected, thick and 

 sharp. Shell thin, glossy, corneous or greenish, ornamented 

 with fine, very close, half-effaced striae. Length $y 2 to 4, diam. 

 1% mm. Aix-les-Bains, Chambery (Savoie). Pupilla sabau- 



