ANALYTICAL KEY. 3 



Shell larger, moderately umbilieated, of four shining fulvous whorls Z. nitidus. 



Shell rather larger, excavately umbilieated, of four fulvous whorls — excavatus. 



Shell very small, narrowly umbilieated, of four crystalline whorls — crystallinus. 



Carrying an orbicular shell, painted or horny, lip sometimes reflected HELIX. 



Shell large, imperforate, of four to four and a half whorls, lip reflected — aspersa. 



Shell very large, subumbilicated, four and a half whorls, lip dilated — pomatia. 



Shell rather large, subumbilicated, of five whorls, lip expanded — arbustorum. 



Shell rather large, imperforate, of five painted whorls, lip expanded — nemoralis. 



Shell moderate, narrowly umbilieated, of six rufous horny whorls — Cantiana. 



Shell smaller, minutely umbilieated, of six yellowish horny whorls — ■ Carthusian a. 



Shell rather large, narrowly umbilieated, of five black-pencilled whorls — Pisana. 



Shell moderate, slightly umbilieated, of five rust-banded whorls — vvrgata. 



Shell smaller, larger umbilieated, of five wrinkled banded whorls — fasciolata . 



Shell rather large, broadly umbilieated, of five rather narrow whorls — ericetorum . 



Shell moderate, largely umbilieated, of six whorls, aperture triangular — obvoluta. 



Shell rather large, lens-shaped, brown, of five whorls, Up expanded — lapicida. 



Shell small, deeply umbilieated, of six yellowish or rufous whorls — rufescens. 



Shell small, openly umbilieated, of six downy horny whorls — kispida. 



Shell small, minutely umbilieated, of six silky hairy whorls — sericea. 



Shell small, of six greenish wrinkly membranaceous whorls — revelata. 



Shell small, of five glassy fuscous-olive membranaceous whorls — fusca. 



Shell smaller, trochiform, of six thin glossy fulvous whorls — fulva. 



Shell very small, subglobose, of six horny lamellated whorls — lamellata. 



Shell very small, of four horny whorls, lamellated, edged with lashes — aeuleata. 



Shell minute, largely umbilieated, of four subhyaline tubular whorls — pulchella. 



Shell small, largely umbilieated, of six depressed striated whorls — rotundatus. 



Shell minute, largely umbilieated, of five brown horny whorls — rupestris. 



Shell more minute, largely umbilieated, of four horny whorls — pygmeea. 



Carrying a minutely umbilieated turriculate shell of eight to nine whorls BULIMTJS. 



Shell horny, marbled with opake white. Inhabiting chalk soil — acutus. 



Shell stouter, dark olive, shagreened. Inhabiting wooded districts — montanus. 



Shell smaller, constricted, fuscous. Inhabiting wooded districts — obscurus. 



Carrying an imperforate cylindrical shell. Inhabiting wet places ZUA. 



Shell of five smooth shining horny whorls. Columella slightly truncated ... — subcylindrica. 



Carrying an imperforate cylindrical shell. Inhabiting wooded districts AZECA. 



Shell of seven smooth whorls, with an ear-shaped toothed aperture — tridens. 



Carrying a smooth aeicular hyaline shell. Burrowing in earth. Blind ACHATINA. 



Shell mi nute, imperforate, of six whorls. Columella involute, truncated... — acieula. 



Carrying a slender sinistral shell, enclosing itself by a clausilium CLA USILIA. 



Shell moderately large, nearly smooth, aperture two-plaited — laminata. 



Shell rather larger, densely ridge- wrinkled, aperture two-plaited — biplicata. 



Shell smaller, swollen, finely wrinkled, aperture five-plaited — Molphii. 



Shell small, finely wrinkled, dark brown, aperture two-plaited — perversa. 



Carrying a conically turreted sinistral transparent horny shell BALEA. 



Shell minutely umbilieated, of seven glossy finely-striated whorls — perversa. 



