70 THE ELEMENTS 



tricose in the middle, and narrow at 

 each end ; *****ventricose, emits a 

 tinkling sound when thrown on its 

 back upon a table. 



Habitation. The Cones have only 

 been found to inhabit the ocean, and 

 are generally found on rocky shores. 



This genus is a very good one, and 

 well defined by Linne. Although it 

 contains a great many species, none 

 have been found among them to differ 

 so much, as to allow any one to attempt 

 a new genus from it. 



Many of the Cones are very beauti- 

 ful. These shells, in general, are the 

 highest priced of all shells, as they are 

 very rare. One species, the Cedo 

 Nulli of Lyonet, is valued at one hun- 

 dred guineas. Very few perfect speci- 

 mens of this shell are known ; and 

 those are only to be met with in the 

 most valuable cabinets. 



In Parkinsons Organic Remains^ 

 vol, 3, several curious specimens are 



