206 



Corbett : Terrestrial Mollusca of- Doncaster. 



Hyalinia excavata. This species appears to avoid the lime- 

 stone district. The only locality where I have taken it is 

 Wheatley Wood, where it is common on decaying- stumps 

 of Fir. 



Hyalinia crystallina. Very abundant on damp logs in the 



limestone district. 

 Hyalinia fulva. Generally distributed and locally common at 



Cusworth. It occurs sparingly off the limestone at 



Wheatley W 7 ood. 

 Helix aculeata. By no means common, but widely distributed 



on the limestone. Edlington, Marr, Sutton, etc. 

 Helix aspersa. Abundant on both limestone and sand. 

 Var. exalbida. Mr. Paterson has shown me specimens of this 



var. taken by him in a garden at Wheatley. 

 Helix nemoralis. Abundant on limestone, and frequent on 



sand at Wheatley, Armthorpe, etc. 

 Helix hortensis. Not nearly so abundant as H. nemorcilis, and 



apparently confined to limestone, where it is local. Conis- 



borough and Edling-ton. 

 Helix arbustorum. Very rare and local. The only place 



where I have found this species is at Edlington Wood. 

 Var. fusca. All the specimens that I have seen from this 



locality pertain to this variety. 

 Helix cantiana. Local, but very abundant at Edling-ton. 



I found a solitary specimen by the side of the railway at 



Rossington last summer. Probably transported by train. 

 Helix rufescens. Extremely and unaccountably rare. The 



only specimens of which I know are two which were found 



by Mr. Moor at Hexthorpe. 

 Helix hispida. Very abundant ; varieties occur as follows :— 

 V ar. concinna, common. 

 Var. subglobosa, rather rare. 



Helix virgata. Local, and confined to the limestone. Abundant 



at Kirk Smeaton, less common at Askern and Edlington. 

 Helix caperata. Widely distributed over the limestone, but 



seldom common. Most abundant in a quarry at Scawthorpe. 

 Helix rotundata. Perhaps the most abundant shell in this 



neighbourhood. It varies little except in the prominence 



of the spire. 



Var. pyramidalis. Frequent, along with the type and inter- 

 mediates. 



Naturalist. 



