248 LAND AND FRESH WATER SHELLS. 
tainly be with difficulty distinguished from Helix 
nitens were it not for their odour ; but the fry have 
a remarkably glossy aspect, they look like little 
gems in the hedges; these have also a consider- 
able depth at the aperture, while the young of 
Helix nitens possess the characteristic bend and 
narrowness of mouth observable in older shells. 
Some specimens seem not to emit the scent until 
immersed in hot water. 
Helix hispida.—Not common. In old walls and 
under stones. Some occur without hairs. 
Helix crystallina.— Common in wet hedges 
among moss. 
Helix radiata. —Common under stones, wood, &e. 
generally selecting damp places. I have found the 
white variety. 
Helix rupestris.—Common in dry walls and old 
buildings. I have noticed them on the walls of 
churches, and on rocks plentifully. In summer 
when a shower falls they will come out in numbers 
from their recesses, and appear greatly refreshed 
and enlivened. 
Helix fulva.—This rare species is found with us 
among leaves, and under stones, especially where 
there is a little moisture. Specimens vary in shape. 
Helix pulchellan—Rare. ‘The smooth variety 
only has come under my notice. I have found it 
under stones. Mr. T. Colley found a colony of 
the rough sort in avery dry wall at Trematon Castle 
in Cornwall. According to Dr. 'Turton’s experience 
this last variety is found only in damp places. 
Helix pura.—Found by Dr. Turton. 
Clausilia rugosa.—Abundant in old walls. 
Clausilia parvulan—A specimen found by Dr. 
Turton at Torquay. 
Bulimus obscurus.—Rather rare. Chiefly found 
in old dry hedges. I lately ascertained that many 
of this kind retire in winter to the crevices of rocks, 
