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UNIVALVES HALIOtlS. 



Albicilla. 



Histrio. 



Plicata. 



Grossa. 



Chamaeleon (Changeable N.) 



Undata. 



Exuvia (Deep ridged N.) 



Maxima. 



Textilis. 



At rata. 



Ascensionis. 



Lineata. 



Versicolor. 



Pica (Magpie N.) 



Costata. 



Quadricolor. 



Malaccensis. 



Antillarum. 



Flamniea. 



Fulgurans. 



Tessellata. 



Bifasciata. 



Literata. 



Violacea. 



Senegalensis. 



Promontorii. 



Tricolor. 



Perversa. 



Turrita. 



Aciileata. 



HALTOTIS. — Sea-ear or Ear-Shell. 



Animal — a Limax: Shell univalve f dilated, ear-shaped, 

 with a longitudinal row of orifices along the surface; 

 spire lateral, and nearly concealed. 



Of this beautiful genus there are but nineteen species; 

 and their general form and appearance are so similar, 

 that it often becomes a matter of difficulty to distinguish 

 the one from the other. All the Haliotides are shaped 

 something like the human ear, except one, which by- 

 way of distinction is called the Haliotis asinuni, or ass's- 



