126 HELICID&. 



darker in colour, the upper tentacles are more slender, 

 and the foot narrower ; the shell is more depressed 

 and glossy, the umbilicus wider, and the hairs with 

 which the epidermis is clothed are less numerous and 

 more easily rubbed off. Although the shell is much 

 smaller than that of the typical form of H. rufescens, 

 it bears a close resemblance to small specimens of 

 that species. 



Var. i. albida. Shell white, with specimens of the usual 

 colour, B.C. 



Var. 2. minor. Shell smaller, and also white ; spire more 

 depressed than usual. South of Ireland (Dillwyn), Bath (Clark), 

 Dover (J. G. J.), B.C. 



II. H. HIS'PIDA,* LlNNfi. PL. VIII. 



Body oblong, of a darkish slaty-brown above, greyish-brown 

 beneath, sides whitish, rather transparent, tubercles round, 

 covered with milk-white specks ; tentacles thick, nearly cylin- 

 drical, diverging at their base, bulbs rather transparent ; foot 

 finely spotted with black, rounded in front, narrowing towards 

 the tail, which is keeled and bluntly pointed. 



Shell subconic, slightly compressed beneath, thin, somewhat 

 transparent, scarcely glossy, horn-coloured or dark yellowish- 

 brown, sometimes with a line of paler colour round the centre 

 of the body whorl ; irregularly and finely striate transversely ; 

 periphery rounded, rarely, and never strongly, keeled ; epider- 

 mis thick, clothed with close-set bristles, which are recurved 

 and not easily rubbed off ; whorls 6-7, rounded ; spire some- 

 what produced, apex obtuse ; suture deep ; mouth semilunar, 

 somewhat oblique, usually furnished with an internal rib ; outer 

 lip thin, not reflected, except near the umbilicus, which is small, 

 but deep. 



Inhabits every part of Great Britain, in woods, 

 hedges, and other places, among moss, under stones, 



* Bristly. 



