$G. JOURNAL OF CONCHOLOGY. 



MOLLUSCA OF THE 



NEIGHBOURHOOD OF CLAPHAM, YORKSHIRE. 



By HUGH RICHARDSON. 



The following list is the result of an examination of the 



district by J. R. B. TomHn, M. C. Hughes, and myself during 



a recent geological excursion. Mr. Tomlin is responsible for 



most of the work ; anything found by Mr. Hughes or myself 



is initialed. 



The lake marl in Crummockdale is the bed of an old Tarn; 



there is little or no peat above it. 



Arion ater (L). In Clapham Woods ; uncommon. 



Arion hortensis Fer. Generally distributed. 



Limax agrestis L. Type common. An albino by Clap- 

 ham church-yard wall. 



Limax laevis Mull. One specimen in Kingsdale, 



Limax marginatus. Occasional, among moss, leaves, &c. 



Succinea putris (L.). Two specimens in lake marl, Crum- 

 mockdale. 



Vitrina pellucida Mull. Not common, though generally 

 distributed in moss. 



Zonites celiarius (MiilL). Ubiquitous. 



Zonites alliarius (Miller). Kingsdale. 



Zonites purus (Alder). Near Coombe Quarry, Ribblesdale 

 M.C.H. 



Zonites nitidus (MiilL). Occasional specimens everywhere. 



Zonites crystal iinus (MiilL). Not uncommon in moss. 



Zonites fulvus (MiilL). One in Kingsdale, one in Clap- 

 ham woods. 



Helix lamellata Jeff. Two specimens in Farrar's grounds, 

 Clapham. 



Helix nemo ra lis L. Empty shells on the fells, H.R. 

 Dead shells in Clapham Woods and Kingsdale. 



Helix hortensis MiilL 



Helix arbustorum L. Kingsdale and Clapham Woods. 



I.e., v., April, 18S6. 



