HELIX. 71 



identity. It is more depressed and has a larger um- 

 bilicus than the adult of the last species, and is smaller 

 than the usual type. 



Var. L major. Larger. 



Var. II. ornata. Smaller, with a broad, dark band. 



Var. III. subscalaris. Spire more raised, whorls 

 more tumid. 



Var. IV. Gig axii. Smaller, spire more depressed 



18. H. ERICETORUM (inhabiting heaths). 



Almost circular, very flat, thin, nearly opaque, glossy, 

 cream- colour, with one broad dark band above and several 

 narrow ones beneath; spire slightly raised; whorls six, 

 cylindrical; mouth nearly circular, often of a reddish 

 colour inside ; umbilicus very large and open. 



Found in considerable quantities on heaths, downs, 

 and sand-hills particularly by the sea. It appears to 

 be as fond of thistles as the donkey, but without that 

 animal's reasonable excuse ! 



Var. I. alba. Milk white. 



Var. II. minor. Much smaller, sometimes white, 

 sometimes banded. 



Var. III. instabilis. Smaller, spire more raised, 

 darker, streaked or spotted. 



19. H. ROTUND ATA (rounc 

 Circular, compressed, thin, and semi-trarisparent, pale 



