HELIX. 73 



yellowish horn-colour ; striated finely and regularly in the 

 line of growth ; whorls four, cylindrical ; spire more or less 

 raised ; umbilicus large. 



This is the smallest of the Helices. It frequents 

 moist situations in woods and under hedges among dead 

 leaves. A good plan that saves much time is to take 

 a quantity of dead leaves home, and after drying them, 

 to examine the siftings. 



H.pygm&a is a very pleasing object under a powerful 

 lens the close-set, well-marked striae appearing as a 

 surprise to the observer. 



22. H. PULCHELLA (minutely beautiful). 



Nearly circular, rather solid, semi-transparent, white ; 

 whorls three and a half ; mouth nearly circular, with rim 

 thickened, giving it a trumpet-shaped appearance; um- 

 bilicus wide and shallow. 



This beautiful little shell is found under stones, 

 among moss, and on sand-hills in many parts of Great 

 Britain and Ireland. Its peculiarly shaped mouth is 

 a sufficiently distinctive mark of its identity. 



The variety is not uncommon. 



At Beaumaris, where it is abundant, I have noticed 

 that the type is comparatively rare. 



Yar. costata. Marked in line of growth with mem- 

 branaceous ribs. 



