2 20 Shell Life 



the Sting-winkle {Miirex). It has an elevated spire 

 of 7 whorls, with several spiral ribs or keels 

 upon which the epidermis develops into thorn-like 

 points or bristles of a pale brown hue. It has a small 

 curved umbilicus, and the pear-shaped mouth is closed 

 by a yellow-brown operculum. The animal is white 

 or cream coloured speckled with yellow, and has a 

 short bilobed snout separating the long blunt-tipped 

 tentacles. The small black eyes are stalked. The 

 animal lurches from side to side as it walks. It is a 

 northern and local species, its range in Britain 

 embracing the Dogger Bank to the west of 

 Scotland, Ireland, and the Shetlands. Its habitat 

 is in the coralline and deep-sea zones. 



The Bonnet-limpets {Capulidce) have the muzzle 

 extended, the eyes situated on the base of the 

 tentacles, and but one gill-plume, which is finely 

 and deeply divided. Roughly speaking the shell is 

 limpet-shaped, but with considerable difierence. Two 

 genera are represented in this country, each by a single 

 species. They have been considered by Aarious 

 authors never to move from tlie spot to which they 

 have attached themselves in early life, but judging 

 from my experience with specimens in captivity, I 

 reo-ard this as no nearer truth than the similar state- 

 ment formerly made respecting the Common Limpet. 



The Hungarian Cap or Cap of Liberty {Ctvpidus 

 hiingaricibs) is shaped much like the cap of Liberty, 

 the beak or apex being spirally curled back ; semi- 

 transparent, cream coloured, but the greater part of 

 the shell is hidden by a coarse epidermis of dirty 

 pale brown hue, which also hides the radiating ribs. 

 This epidermis is usually rubbed off the upper end of 



