OTINA. 173 



oval, flattish shell, with small spire and large aperture, like 

 a Sigarettts, or " imperforate ear-shell." Its body is thick 

 and large, compared with its shell; its head is rounded and 

 bilobed; its foot is divided by a central groove; and the 

 eyes are set at the bases of very short triangular lappets or 

 flattish tentacles. It lives on the shore accessible to the 

 tides, and hides in the chinks of rocks and the hollows of 

 deserted shells. 



