46 



HELIClDvE. 



leaves. Another favourite habitat are the fissures found 

 in the bark of such trees as the oak, where it may be 

 sometimes found in considerable numbers, clustered 

 together ; the moss and lichen which cover them may 

 also often be searched with success. It is a widely dis- 

 tributed species, and found in all parts of the British 

 Isles. 



P. MUSCORTJM. Linnceus. PI. VII, fig. 5. 



Shell, cylindrical, yellowish brown or chestnut colour ; outer lip noi 

 reflected, but margined by a strong external rib. 



Pupa marginata, Drap., fyc. 



There is very little difference between this and th< 

 former species, as noticed above ; the chief point o- 

 distinction is in the outer lip, which is here curiously 

 marginated by a strong rounded callus or rib. The 

 spine consists of six or seven volutions ; the basal one 

 is not so much extended as in umbilicata. The shell 

 is moderately strong, not diaphanous or shining, of a 

 yellow or brown colour, and slightly striated. Animal 

 greyish black, white underneath, lower tentacles very 

 short. 



Sdb. It is often found in similar localities to the 

 last, but may be also found in dryer situations, on 

 sands near the sea, or calcareous soils. It is widely 

 distributed. 



P. ANGLICA. Ferussac. PI. VII, fig. 6. 



Shell dextral, shining dark brown approaching to black ; peristome 

 flatly reflected ; mouth with fine teeth. 



This beautiful little shell is somewhat smaller than 

 the preceding, and may be readily distinguished from 

 them by having its mouth thickly set with five little 

 threatening teeth. Its colour also is much darker, being 

 almost black. The aperture is something of the shape 

 of the lobe of the human ear. Animal dark lead 

 colour above, white beneath. 



Hal. It is quite a local shell, and may almost be 

 considered rare, having only been found in a few places 



