and Mr. Alder, of Newcastle, are larger than those 

 procured near Nottingham. 



In this neighbourhood it is rare, occasional specimens 

 having been found on the bogs of Oxton and Bulwell. 



It is found at Penzance (Millelt), Cornwall, Devon- 

 shire, Kent, and Dorsetshire (Montagu), South Wales 

 (Jeffreys), Heigham Osier Carr, near Norwich (Bridg- 

 man), Wiltshire and Lincolnshire (Brown), London 

 (Grey), Newcastle (Alder), Northumberland and King's 

 Park, Edinburgh (Brown), Belgrove, near Cork (Hum- 

 phreys), Naas, County of Kildare, and Downpatrick 

 (Brown), Limerick and Ballitore (Harvey), Isle of Man 

 (Forbes), St. Mary's Island, Seilly (Millett), and France 

 (DraparnaudJ. 



Helix aculeata (The Prickly Snail). Mullcr. 

 Figure 66. 



Added in 1785, by Mr. Lighlfoot, in a paper printed 

 in the " Philosophical Transactions " of the Royal 

 Society. 



The form of this siiiijular, minute, yet very interest- 

 ing shell, is conical ; it is fragile, semi-transparent, 

 and of a brownish-horn colour. It has the appearance 

 of having large prickles dispersed over the shell, owing 

 to the peristraca shooting out into spinous foliations. 

 The convolutions, which are four in number, are cir- 

 cular, and deeply separated ; the spire raised, aperture 

 somewhat round, and the umbilicus copious and deep. 



Diameter a tenth of an inch, and as much high. 



The colour of the animal is greyish. The tentacles 

 are lengthy. 



