86 LAND AND FRESH- WATER SHELLS. 



large, deep. Height W^ths inch. On old walls and castle-ruins. 

 Somewhat local. I/, ritpesfris?'' 



(v) Shell very minute, depressed, nearly circular, yellowish 

 horn-colour ; whorls four, with the spire somewhat produced ; 

 mouth semilunar; umbilicus large, deep. Height yV^h inch. 

 Among dead leaves, and under stones. Moderately common. 



H. pyguicva. 



(w) Shell nearly circular, sub-depressed, milk-white ; whorls 

 three and a-half, the body-whorl exceeding in size the rest of the 

 shell ; spire slightly produced ; mouth circular, thickened and 

 reflected so as to form a double peristome ; umbilicus large, 

 deep. Height -^V^hs inch. Among stones, moss, and grass. 

 Somewhat local. H. puldiella.'^'^ 



{x) Shell sharply keeled at the periphery, circular, depressed, 

 greyish or horn-colour, streaked regularly with rufous brown \ 

 whorls five, with the spire very slightly produced j mouth oval, 

 surrounded by a thick white reflected rim, somewhat angulated 

 above and below; umbilicus large, deep. Height #5ths inch. In 

 hedgerows and woods in calcareous districts. Local. 



H. lapicida. ^^ 



(y) Shell sub-discoidal, depressed, solid, dull rufous-brown 

 hispid; whorls six and a-half; spire sunk below the level of the 

 body-whorl ; mouth triangular, marked with three protuberances, 

 and with a pinkish-white, reflected peristome ; umbilicus large, 

 deep. Height /V^hs inch. Among the moss near the roots of 

 shady trees at Ditcham Wood, Hants. Rare. If. obvohita, 



{z) Shell turreted, conical, yellowish-white streaked with 

 brown, and with generally a reddish-brown or blackish band 

 below the periphery ; whorls eight to nine ; spire tapering, blunt ; 

 mouth oval; umbilicus narrow, rather shallow. Height §ths inch. 

 On cliffs and downs near the coast. 



H. [Cochlicella) acuta { = Biili/nus aciitus).^^ 



" V. znridescenti-alba, greenish-white. 



'^ V. cosiata, not so glossy, reddish with numerous transverse, membranous 

 ribs as well as intermediate strioe. 



'^ V. albina, whitish, unicolor ; v. minor, dwarfed. 



^^ V. injiata, slightly ventricose ; v. strigata with broad, whitish ribs 



