4542 Mollusks. 



Helix concinna. Found along with H. rufescens. 

 „ virgata. Very common, feeding on the scanty herbage of 

 the limestone rocks. 



„ caperata. Five or six specimens on a mud wall at Hanwell. 

 j, ericetorum. Hill-side near Wiggington Heath. 

 Zonites rotundatus. Common under stones. 



„ umbilicatus. Common in the limestone walls at Edge Hill 

 and Chipping Norton. 



„ pygmaeus. Pretty common in damp grass. 

 „ cellarius. Common under stones. 

 „ allianus. Ditto. 



„ purus. Frequent in damp ditches and woods. 

 „ nitidulus. Common under stones. 

 „ radiatulus. Occasional. 



„ crystallinus. Rather common along with Z. purus. 

 Succinea putris. Found in marshy situations, but not so plentiful 

 as S. Pfeifferi. 



„ Pfeifferi. Common in marshy ditches and osier-beds. 

 Bulimus obscurus. A few specimens at the roots of trees. 

 Zua lubrica. Common in gardens and woods. 

 Achatina .acicula. A few dead specimens from a dry bank at 

 Broughton. 



Pupa umbilicata. Common beneath moss and at the roots of grass. 



„ marginata. A few specimens from Rainsbro' Camp. 

 Vertigo pygmaea. Beneath the moss on the old wall of Rainsbro' 

 Camp. 



„ pusilla. Same locality as V. pygmaea. 

 Balea perversa. Not uncommon on old walls at Sibford and 

 Astrup. 



Clausilia bidens. Not rare in the woods at Edge Hill. 



„ nigricans. Very abundant in woods. 

 Carychium minimum. Common at the roots of mossy grass. 

 Limnaeus auricularis. Some fine specimens from the canal and 

 river. 



„ pereger. Very common, as also is the var. lineatus. 



„ stagnalis. Common in the river Cherwell. 



„ palustris. Very abundant in the Oxford Canal. 



„ truncatulus. Not uncommon along with L. palustris. 



Ancylus fluviatilis. Common in running streams, but small and 

 difficult to find, being generally covered with a greenish incrusta- 

 tion. 



