WATER-BREATIIING SNAILS. 21 5 



when crawling up the glass sides of the aquarium 

 with the foot towards you. The Fusus, of the coast 

 of the United States, may be found upon the shore 

 after storms. The Harp Shell, of the Pacific, is always 

 admired for its beautiful form and its delicate colors. 

 The Oliva Shell, of Panama, is very beautiful, and is 

 taken alive by bait attached to lines. 



Cones. 



There are nearly a thousand kinds of Cones. They 

 are shaped like a cone with the top downwards. 



Volutes. 



The Volutes, Miter Shell, and Marginella belong 

 under this head. Figures 376-378. 



Cowries. 



The Cowries are abundant in the warm seas, and 

 are found on reefs and under rocks. The shell has a 

 shining enameled surface, and many kinds are beauti- 

 fully spotted and clouded. The Asiatic islanders use 

 them to adorn their clothing, for sinkers to fishing nets, 

 and in trading. The Money Cowrie is brought in im- 

 mense quantities from the Pacific to England, then 

 carried to western Africa, and used for money in trad- 

 ing with the natives. It is scarcely an inch long. The 

 Egg Cowrie and the Cypraea of the Indian Ocean show 

 the general form of these shells. Figures 379-381. 



Naticas, Pyramid Shells, Cerithiums, etc. 



The Naticas are Sea Snails which have the shell some- 

 what globe-shaped. The Pyramid Shells are named 



