LAND AND PRESH-WATER MOLLUSKS. 179 



Helix aculeata. — Common among damp vegetable matter at hedge bottoms. 



Helix granulata. — Found in a small copse some years since, but not lately. 



Helix sericea. — Two or three specimens were found last year by W. Robinson, 

 of York. 



Helix hispida. — Common among loose stones, etc. 



Helix concinna. — Abundant. 



Helix depilata. — One or two supposed specimens. 



Helix rufescens. — Common on a hedge bank near Wakefield. I have all 

 shades, from light horn to bright brown. 



Helix virgata. — Abundant among the herbage near the Pontefract Railway 

 Station, but comparatively small in size. 



Helix caperata. — Not common. 



Helix ericetorum. — Common at Went Vale on limestone herbage. 



Zonites rotundatus. — Abundant under stones. 



Zonites pygrageus. — Pretty common at root of damp or peaty grass. 



Zonites alliarius. — Occasionally beneath stones. Strongly garlic scented, 

 especially when excited. 



Zonites cellarius. — Common in its usual haunts. 



Zonites purus. — Common among decayed leaves at hedge bottoms, and in 

 woods. 



Zonites crystallinus. — Common among decayed leaves at hedge bottoms, and 

 in woods. 



Zonites nitidulus. — Very common under stones, etc. 



Zonites radiatulus. — Occasionally found at roots of grass in damp pastures. 



Zonites lucidus. — This beautiful shell occurs in unusual abundance among 

 the stranded flags and equiseta of Hemsworth Dam. The larger specimens 

 seem to be more or less corroded at the apex. 



Zonites excavatus. — Three specimens of this animal were unexpectedly ob- 

 tained last year from an old loose tree stump in the wood at Winterset. 



Succinia putris. — Occasional, but not by any means so abundant as 

 ' Succinia Pfeifferi, which, though small, swarms in same locality as Z. lucidus. 



Bulimus obscurus. — Not common: perhaps overlooked from its power of 

 concealment. 



Zua lubrica. — Very common at roots of grass, etc. 



Achatina acicula. — Several specimens of this shell from the limestone at 



^ent Vale, but only two or three inhabited. 



Pupa umbilicata. — Common. 



Pupa marginata. — A few dead but good specimens from the moist earth 

 i)f same locality as Achatina acicula. 



Vertigo. — Some of these beautiful little shells have been obtained from the 



[agnesian limestone crags at Went Vale, chiefly among the debris that has 



collected by the side of the rocks, and become mixed with the vegetable 



mould and decayed leaves below. By filling a botanical case with this earth, 



and examining it at leisure, I have procured at one forage above one hundred 



