82 HELICID. 
It is particularly hardy, and has been noticed actively 
crawling about during frost. It is found among under- 
wood, especially nettles, often in clusters on the stalks 
generally at the joints. Mr. Masefield, of Cheadle, Stafts., 
informs me that he finds it on the root leaves of the 
Lychnis dioica when it is not out on the nettle stalks, and 
also points out the striking resemblance it bears to the 
dead seed-capsules of that plant, especially when they are 
wet and transparent with dew or rain. 
The variety is found not uncommonly in Park Woods, 
Bassenthwaite. 
Var. vitrea (Farrer). Shell pale glassy green, animal 
milk-white, excepting tentacular retractors. 
Sub-genus.—XEROPHILA ffeld. 
2. ". PISANA (jist. moticed at Pisa), Muller. Pl, IN. 54 aae 
Sub-globular, solid; s¢zated both spirally and in the line of growth, 
giving a reticulated appearance under a lens ; nearly opaque, glossy, 
yellowish white, marked with dark bands varying in number, often 
interrupted ; zvor/s 55}; interior of mouth rose colour ; zzbz/icus 
very small. A. 123mm. B. 183mm. 
This variable species is unmistakable from its markings 
and sculpture, though it somewhat resembles a large form 
of A. virgata. It is very local, being only found in the 
Channel Isles, Cornwall, Swansea, Tenby, and in Counties 
Dublin and Kildare, Meath and Louth. Though strictly 
a littoral species in the British Isles, it is found inland on 
the continent. The Rev. J. W. Horsley informs me that 
he has taken it at Tours and at Pau. 
