ZONITIDA. 9 
VirREA PuRA, Alder (=Hyalinia pura, Westerlund, and 
Zonites purus, Jeffreys). 
Generally distributed. Gregarious amongst leaves, moss, 
etc., in hedges and woods. 
There are two forms of this species, white and horn- 
coloured, and both are equally common. It may therefore be 
considered a dimorphic species, but many authorities consider 
one form alone as the type. Those who deem the colourless 
form the type, allude to the horn-coloured one as var. nitidosa, 
Gray; if the latter is considered typical, then the former be- 
comes var. margaritacea, Jeffreys. 
VITREA RADIATULA, Alder (= Hyalinia radiatula, Alder, and 
~ LZonites radiatulus, Gray ). 
Apparently uncommon. 
North. 
* At roots of stunted grass, growing in the crevices of 
limestone rocks on Elson Hill, and in similar situations 
on the eastern scarp of Clevedon Hill” ; Norman. 
Weston district ; F. A. Knight. 
Leigh Woods, Bristol; Cundall. 
Bath; Jenyns Coll. Bath Museum. 
Rimpton ! 
South. 
Brympton, Yeovil, uncommon ; John Ponsonby. 
Var. viridiscenti-alba, Jeffreys. 
Brympton; J. Ponsonby. 
ZONITOIDES NITIDUS, Muller (= Hyalinia nitida Westerlund 
and Zonities lucidus Gray’s Turton). 
Uncommon. Gregarious on the borders of ditches, rhines, 
rivers and vanals. 
North. 
“Damp situations. Under stones on the grass in Kenn 
and Portishead Moors ;” Norman. 
Weston-super-Mare ; Crotch. 
Weston district; F. A. Knight. 
Rejectamenta of a stream at Shepton Montague, near 
Bruton ! 
Glastonbury Fens; F. Townsend, 1852, Haslemere Mus. 
Coll. 
Monkton Combe, Bath ; Kenneth McKean. 
Plantations on the peat moors at Shapwick, etc ! 
