2 °5 



TERRESTRIAL MOLLUSCA OF DONCASTER. 



HERBERT H. CORBETT, M.R.C.S., 

 Doncaster. 



The neighbourhood of Doncaster, with its numerous woods and 

 old quarries in the Magnesian Limestone, offers a promising- 

 field to the collector of terrestrial mollusca, and during- the last 

 few years I have been paying - some attention to these animals, 

 with the object of forming- a local collection of shells for the 

 town museum. Now, thinking that the results of my observa- 

 tions may be of interest to conchological readers of ' The 

 Naturalist,' I append the following list of species and varieties 

 found, and some notes on their distribution, etc. :— 

 Succinea putris. Appears to be local, though further search 



will probably result in other localities being found. 



Loversal, Cusworth, and Wheatley. 

 Succinea elegans. Along with the above species at Loversal. 

 Var. minor. On leaves of A T uphar lutea in the ponds at 



Wheatley. 



Vitrina pellucida. In quarries, under logs and stones every- 

 where on the limestone, and occurring, though not 

 commonly, on the Triassic Sandstone at Wheatley Wood. 



Jiyalinia cellaria. Common and generally distributed, but not 

 by any means the most abundant of the genus. The 

 specimens are usually rather small. 



Jiyalinia alliaria. Very common all over the limestone district 

 and frequent on sand and gravel also. 



Var. viridula. Of this form I have only seen one specimen 

 at Cusworth. 



Hyalinia helvetica (= glabra). Very local, but abundant in 

 some places. Very fine specimens may be found at Cus- 

 worth and Edlington. 



Hyalinia nitidula. Probably the most abundant of the genus, 

 but not found off the limestone. 



Hyalinia pura. Sparingly distributed and local. Common at 

 Cusworth, and extending to the sand district in Wheatley 

 Wood. 



Var. margaritacea. I have only found this in Edlington Wood. 

 Hyalinia radiatula. Rare and local. Odd specimens are to 



be found at Cusworth and Edlington, but I have novo; 



found more than two or three at once. 



1902 June 1. 



