HELIX. 59 
This pretty little shell is a lnk between the Zonites 
and Helices. Its quaint pyramidal shape prevents a 
possibility of mistaking its identity. 
Though generally distributed, it is by no means 
common everywhere. It should be sought under rotten 
branches and logs and among moss in woods. 
Var. Mortoni. Paler, spire more depressed, more 
sharply carinated. 
Genus IV.—HELIx. 
1. H. ameniAta (having plates). 
Globosely conic, semi-transparent horn-colour, epidermis 
raised into plaits in the line of growth; whorls six; spire 
blunt; wmbilicus distinct. 
This little shell, which inhabits the north of Great 
Britain and most parts of Ireland, as well as Anglesea, 
frequents dead leaves, especially those of the holly. 
It somewhat resembles an immature Pupa in shape, 
but a second glance will show its distinct umbilicus 
and its plaits of raised epidermis, which form regular 
ridges in the line of growth. 
2. H. acuLHATA (spiny). 
Pyramidal, turreted in appearance owing to its rapidly 
increasing whorls, of which there are four or four and a 
