62 MR. T. PETCH ON LAND AND FRESH-WATER MOLLUSCA OF NORFOLK. 
of B. tentaculata , B. leachii, and L. truncatula , after having been 
stranded on the bank for four weeks. 
The commoner land-shells may be found in abundance on 
the chalk at Hunstanton and Bingstead. I have not met with 
Cyclostoma here, though Dr. Plowright found one specimen. The 
sand hills to the north of Hunstanton are worth a visit in wet 
weather. They are then covered with H. nemoralis, virgata, itala, 
and caperata. Nemoralis shows little variation, but virgata is 
well represented, most of the specimens being var. liyalozona, 
perhaps the prettiest shell on the British list. The corresponding 
variety of itala may also be found. 
Between the marshland and the chalk comes the most unfavour- 
able feature of the Lynn district — the large area covered by sand 
hills. This is absolutely barren, no species having yet developed 
a taste for sand, heather, and pine. Most of the plantations in the 
district consist of Conifers, and to this may be attributed the 
absence of many of the tree-loving species, even of such a common 
one as Helix aculeata. 
Arion ater. Common. The chocolate-brown form is found at 
Middleton, Gaywood, Wormegay, and Setch. 
„ var. rufa. One specimen at Middleton. 
,, minimus. St. Germans. 
„ hortensis. Common in gardens. 
„ circumscriptus. Under wood, etc., St. Germans. 
Amalia Sowerbyii. Amongst nettles near the beach, Hunstanton. 
Limax maximus. Common. 
„ flavus. Common in gardens and outbuildings with 
L. maximus. 
„ marginatus. A very pale form. On a Avail, near the 
station. (Holt.) 
Agriolimax agrestis. Common in fields, gardens, etc. 
,, L/EVis. Amongst Avet moss in company with H. nitida. 
Wormegay, St. Germans. 
Vitrina pellucida. Castle Bising, Hunstanton, Bingstead, 
Terrington, Middleton. 
IIyalinia cellaria. Gayton, Castle Bising, Bcflley, North 
Wootton, etc. 
„ nitidula. (Holt), Castle Bising, Middleton, Wormegay, 
St. Germans, Terrington, Beflley, Brancaster. 
