322 VALUE OF BABE SHELLS. 



rated Pheasant-shells, formerly of great rarity, and expen- 

 sive, but now comparatively cheap. 



The Wentletrap-shells, the common kinds of which are 

 found on our own coasts and those of Europe, are very 

 pretty: they are spiral, with many whorls or wreaths, 

 deeply divided, and crossed by remarkably elevated ribs. 

 The triie shells of this species come from the warm seas, and 

 are generally very beautiful. One kind, called the Precious 

 Wentletrap, is of such rarity and richness, that it is said to 

 have been sold to shell collectors at the price of two hun- 

 dred guineas, but it may now be had for a few shillings. It 

 is nearly two inches in length, snow-white or pale flesh-col- 

 ored, with eight separated wreaths. Trough-shells, several 

 small species of which are very abundant on British sea- 

 shores, are triangular, broader than long, and the valves equal. 

 Some of them have a very attractive appearance. 



