18G MR. ARTHUR MAYFIELD ON THE MOLLUSCA OF NORFOLK. 
H. crystallina (Mull.) var. contracta. Westl. Wliitlingham 
Woods (S.S.P.). 
Helix lapicida, L., var. nigrescens, Taylor. Framingham Earl. 
H. aspersa (Mull.), var. minor, Moq. With usual form. Upper 
Hellesdon. 
„ var. conoidea, Picard. A single specimen. 
Hellesdon. 
„ var. grisea, Moq. Hellesdon, Thorpe. 
* ,, var. albo-fasciata, Jell'. Drayton. 
,, var. tenuior, Shuttl. Yelverton. 
„ var. flammea, Picard. Very common. Earlham, 
Colney, Hellesdon, Drayton. 
„ var. zonata, Moq. Upjjer Hellesdon. 
PI. nemoralis, L., var. minor, Moq. Occasionally with type at 
Earlham and St. Faith’s ; plentiful upon a hedge- 
bank at IPethersett. 
„ var. roseolabiata, Taylor. Pare, Earlham. 
,, var. libellula, Risso. Very common everywhere. 
„ var. rubella, Moq. Frequent, Earlham, Hellesdon, 
IPethersett, Catton. 
,, var. castanea, Moq. Plentiful at Horsham St. 
Faith’s, Earlham. 
,, var. olivacea (Risso). One specimen at Horsham 
St. Faith’s. 
„ var. carnea. Very common. 
,, var. diaphana. A single specimen at Yelverton 
(S.S.P.). 
,, var. hyalozonata, Taylor. A single specimen, 
Earlham. (This shell had also a pale pink 
aperture.) 
PI. hortensis, Miill., var. fuscolabiata, Taylor. Brooke. 
,, var. albina, Moq. Very common, Brundall, 
Lakenham, Catton, etc. 
,, var. lutea, Moq. Common. This and the preceding 
are the most abundant forms. 
,, var. incarnata, Moq. Catton and Sprowston. 
,, var. arenicola, Macgill. Catton, Kirby Bedon, 
Bramerton. 
„ var. tenuis, Baudon. Yelverton (S.S.P.). 
