152 



NOTE ON TERRESTRIAL MOLLUSCA FROM A BLOWN SAND 

 DEPOSIT ON CALDEY. 



By W. J. WiNTLE, F.Z.S. 



Read 12th May, 1922. 

 On the edge of the South Clifi of Priory Bay, Caldey, is an old 

 accumulation of blown sand, of no definite age. About a week ago 

 I noted a pocket in this sand, about 8 feet deep, at the bottom of 

 which was a small accumulation of shells — the result of a wind eddy 

 which had apparently excavated the hole. 



I scraped up two or three handfuls of the sand and shells ; and 

 found the following species : — 



Polita cellaria. A few tops. 



„ alliaria. Four examples. 

 Pyramidula rotundata. Fairly common. 

 Helicella virgata. Common. 



„ caperata. Very common. 

 Cochlicella acuta. Very common. 

 Hygromia hispida. Fairly common. 

 Helix aspersa. Very common. 

 „ nemoralis. Common. 

 „ pisana. Common. 

 Cceciliodes acicula. Four examj^les. 

 Cochlicopa lubrica. Common. 

 Vallonia excentrica. Common. 

 Lauria cylindracea. Common. 

 Pwpilla mriscorum. Common. 

 Vertigo pygmcea. Twelve examples. 

 The points of interest are the occurrence of CcBciliodes acicula — 

 not previously recorded for Caldey, and only recorded as a scarce 

 species in Pembrokeshire — and the occurrence of Pupilla muscorum, 

 which had previously only occurred as a Pleistocene fossil on the 

 island. It is curious that, while Vallonia excentrica is quite common, 

 V. pulchella does not seem to occur. 



