ro6 HELICID&. 



tentacles divergent, upper pair rather long and cylindrical, 

 coarsely granulated, lower pair short ; foot thick, obtusely 

 rounded in front, and gradually narrowing behind to an angular 

 or keeled point ; slime rather copious and iridescent." B.C., 

 vol. v. p. 157. 



Shell compressed, more convex above than beneath, glossy, 

 semitransparent, brownish or yellowish horn-colour, with 

 strongly defined striae in the line of growth ; epidermis rather 

 thin ; whorls 5!, convex, somewhat compact, body whorl 

 occupying a little more than a third of the shell, its base 

 considerably rounded ; spire slightly produced ; suture very 

 deep ; mouth forming about three-fourths of a circle, slightly 

 compressed below ; outer lip thin, rather oblique, reflected near 

 the pillar ; umbilicus very wide and deep. 



Inhabits woods, among moss and decayed leaves, 

 and under fallen timber. Though local it has a wide 

 range. It has been noticed as far north as Aberdeen 

 (J. G. J.), and it occurs in Perthshire, Argyleshire, 

 Bute, and Ross-shire (Buchanan White), and in the 

 south and south-west of Scotland, the north of Eng- 

 land, near Tunbridge Wells (J. G. J.), the Isle of 

 Wight, and Cornwall, also in North and South 

 Wales, and the west and south of Ireland. 



The shell of this species may be distinguished from 

 that of Z. nitidus by its stronger striation, more com- 

 pact whorls, flatter spire, deeper suture, and wider 

 umbilicus. 



Gwyn Jeffreys is of opinion that this species has 

 been erroneously regarded as belonging exclusively to 

 Great Britain. In 'British Conchology,' vol. i. p. 169, 

 he remarks : " I can answer for the identity of Z. 

 excavatus var. vitrina (or viridtila) with the H.petronella 

 of Charpentier, having found specimens of the latter 

 on the Corner Glacier in Switzerland at a height of 



