266 POPULAR CONCHOLOGY. 



muscles. — 2 species recent, 1 of which is also 

 found fossil. 



This shell and its remarkable inhabitant are 



found in the seas of warm latitudes, especially 

 those of Africa, Asia with its islands, and Aus- 

 tralia. They usually remain at the bottom of 

 the water, and are able to creep along rather 

 quickly, supporting themselves upon their ten- 

 tacula, with the head downwards, and the shell 

 raised above ; they often get into the fisher- 

 men's nets when thus moving about at the 

 bottom of the sea. After stormy weather, as 

 it becomes more calm they may be observed, 



