48 Our British Snails 



line by the side of each figure gives its actual 

 height. The shells as numbered are Helix 

 ntpestris, H. pygmcFa, H. piilchclla, H. lapicida, 

 H. ohvoluta, H. terycstris, H. harhava, Ena montana, 

 Ena obscura, Pupa secale, P. anglica, P. cylin- 

 dracea, P. muscorum, Vertigo antivertigo, V. 

 moidinsiana, V. pygmcBa, V. alpestris, V. stib- 

 striata, V. piisilla, V. angustior, V. edentida, and 

 V. miniitissinia. Without a magnif\'ing glass 

 it will be seen that it would be ver}- hard to 

 distinguish some of the minute shells, but this 

 enlargement enables us to see the characteristic 

 denticles in the mouth, and the presence or ab- 

 sence of striations on the shell. 



Pupa (Abida) secale is named from the Latin 

 for rye, a grain of which the shell mere or less 

 resembles. Conical, brown, mouth horseshoe- 

 shaped with eight white denticles. Our largest 

 Pupa. Local, but abundant where found. Pre- 

 fers calcareous rocks or woods. 



Pupa {Laiiria) anglica. — Small, ovate, purplish 

 in colour ; mouth like that of secale. Lives in moss, 

 mainly in the north of Britain. 



Pupa [Lauria) cylindracea. — Small, cylindri- 

 cal, paler than the last ; thick and reflected white 

 lip with one denticle. Abundant. On stones, 

 in moss, under leaves and bark. 



Pupa [Jaminia) muscorum. — Common, especi- 

 ally on sandy soils near the sea. Mouth nearly 

 circular, whereas in the two former species it 



