58 BOOK OF SPECIES, 



dulated with obsolete striae ; white ; spire rather 

 prominent ; aperture slightly concave, and dilated ; 

 umbilicus covered; diam. IJ. Front. 3. 



STOMATIA. 



Ear-shaped, imperforate ; spire prominent ; aper- 

 ture entire, oblong, and large; right lip ele- 

 vated as much as the pillar ; back with a trans- 

 verse sub-carinated tuberculated rib. 



S. PHYMOTIS. W. 36. 18. 



STOMATELLA. 



Orbicular or oblong, ear-shaped, imperforate; aper- 

 ture entire, large, elongated; outer lip effuse, 

 dilated, open, and iridescent. 



S. iMBRiCATA. Sub-orbicular^ convex de- 

 pressed, roughish, grey, with crowded transverse 

 scaly imbricated furrows ; spire slightly promi- 

 nent; U diam. W. Sup. 8. 4. 



S. AURICULA. Haliotis-shaped, ovate-oblongs 

 convex on the back, smooth, yellowish rose- 

 colour, with brown lines ; spire lateral, slightly 

 prominent; lip arcuated by a sinus; diam. |. 

 W. 37. 54. 



HALIOTIS. 



Ear-shaped, usually depressed; spire short, some- 

 times depressed, and nearly lateral; aperture 

 extremely large, oblong-ovate, and entire in 



