HELIX. 173 



Var. PRATENSIS, Baudon. 



Var. SUBCCELATA, Lessona. 



Shell more depressed, spire low. 



Susa, Piedmont. 

 Var. RIPULARUM, Lessona. 



Whorls more convex than the type, umbilicus slightly wider. 



Var. VULGARIS, Lessona. 



Spire convexly elevated; very close to the type. 



Var. TROCHIFORMIS, Lessona. 



Turbinately elevated ; umbilicus narrower. 



Var. HEMISPH^RICA, Lessona. 



Spire convexly depressed, about as high as the type, whorls more 

 oblique. 



Var. STJBPLEBEIA, Lessona. 



Spire conical, moderately elevated, umbilicus narrow ; corneous, 

 slightly marked with alternate chestnut and white markings. 



Var. NANA, Jeffreys. 



Small, depressed, the umbilicus wider and lip stronger. 

 Diam. 5'4 mill. 



Monstrosities with scalariform spire and with reversed whorls 

 have been observed. 



H. VILLEBSII, Malzine. PL 38, figs. 45-47. 



Openly umbilicated, form of H. hispida, but more depressed, milk 

 white, diaphanous, incremental striae slight but distinct ; whorls 4i. 



Diam. 7-8 mill. 



Abbaye de Villers, Belgium. 



H. CONCINNA, Jeffreys. PI. 38, fig. 34 (lower figure). 



Widely umbilicated, light corneous or yellowish ash color, often 

 with dull reddish strigations and a pale peripheral band, with scat- 

 tered short, caducous hairs ; whorls 6-7, slightly convex, with deep 

 suture ; peristome patulous, with an interior white callus. 



Diam. 10 mill. 



Northern, Europe. 



Some authors consider this a variety of H. kispida. 



Var. GYRATUS, Westerl. 



Shell brownish or ferruginous, much depressed, whorls very slowly 



increasing. 



Sweden. 



