CNiecklace-shells and Winkles 



221 



Hungarian Cap 



tlie shell, and overlaps the edge of the mouth. The 

 lines of growth are very prominent, but so irregular 

 that the shell appears to have 

 been broken several times and 

 patched up. They are found from 

 low water to 100 fathoms, at- 

 tached to rocks and shells ; they 

 are particularly fond of 03^ster 

 and scallop - beds, where they 

 attach themselves to the upper 

 valves. Their food appears to be both animal and 

 vegetable. Clark and Alder have described this 

 species and the next as carrying their spawn, till 

 hatched, between the muzzle and the forepart of the 

 foot. 



Cup-and-Saucer lAi\\^<dt{Calyptrcea chinensis). In 

 this species the shell is buckler-shaped or conical, with 

 the beak in the centre ; lines of growth spiral. The 

 outside dull greenish or with a violet tinge ; the inside 

 similarly tinted, but highly polished, with a twisted 

 plate or diaphragm attached to the 

 hinder part. It is a local species, found 

 on the south coast from Milford Haven 

 westward ; also in the Channel Islands. 

 It occurs from low water to a depth of 

 15 fathoms attached to shells or pebbles; 

 in the former situation the cone is very 

 low — almost flat — but on small pebbles it becomes 

 much more elevated. The pebbles selected for resi- 

 dence often present a surface scarcely larger than 

 the mouth of the shell, so that increase in the dia- 

 meter of the latter gives place to vertical enlargement. 

 Audouin and Milne Edwards declare that the female 



Cup-and-Saucer 

 Linn pet — interior 



