86 



Top-sbaped, smootli, opaque, aperture round and 

 sHghtly tinged with red, umbilicus of a moderate size. 



Colour white, with rich brown bands. 



It varies in size froui a quarter to three-quarters of 

 an inch in diameter. 



There are from live to six convolutions. 



Varieties are sometimes brownish, and others while 

 without bands. 



Specimens received from Dublin, Isle of Wight, 

 Bath, and Penzance, show the same variations. 



Found in chalk and limestone districts, and 

 especially near the sea shore. 



Breeds in September and October, laying from 40 to 

 60 eggs at a time, which are from 15 to 20 days in 

 hatching, and from one and a half to two years in 

 coming to maturity (M. Bouchaud Chatereaux). 



Some of the localities recorded are — Penzance (Mil- 

 lett), Cornwall (Maton), Kent and Dorsetshire (Mon- 

 tagu), Bath (The Author), Devonshire (Alder), Wilt- 

 shire (Montagu), Essex (Sheppard), Bristol (Miller), 

 London (Grey), Cambridge (Maton), Swafifham, near 

 Norwich (Bridgman), and Newcastle (Aider). 



In Ireland, Dublin (Alder), King's County, Queen's 

 County, and Kildare (Brown). 



In Wales, at Swansea (Jeffreys). 



The Isle of Wight (A. H. Lowe), lona (Lowe), St. 

 Mary's Island, Scilly (Millett). 



Widely-spread throughout Central and Southern Eu- 

 rope (Forbes), Germany (Pfeifler), Corsica (Payradeau), 

 Sandwich Islands (Fieniingj, and introduced into the 

 United States (Grey). 



