MOLLUSCA OR UNIVALVES. 199 



prominent than the last genus; ear-shaped; 

 mouth large, oblong, interior pearly. Animal 

 not known. — There are 2 species, recent. 



These shells are brought from 

 the East Indies and New Hol- 

 land. 



This genus and the preceding 

 are now generally placed together 

 under the name of Stomatia. The shells are 

 distinguished from those of the Haliotis by 

 being destitute of holes, and from the genus 

 Sigaretus by being pearly. 

 p 67. Haliotis. — Shell flat, pearly inside, 

 slightly spiral at one end, and having one side 



perforated with small holes; aperture almost 

 as large as the shell. Animal, head large, 

 having two long round tentacula, with eyes at 

 the base on footstalks ; foot very large, having 

 o 4 



