1,>3 THE ELEMENTS 



Oblong-ovate, oblong egg-shaped. 



Obsolete, indistinct, not well defined. 



Oeelated, applied to eye-like spots. 



Ochreous, resembling ochre. 



OfFuscated, darkened, clouded, dim- 

 med. 



Olivaceous, being of an olive colour, 

 resembling olive. 



Operculum, a lid by which some of 

 the turbinated univalves close the 

 aperture ; and is applied to some of 

 the tops of multivalves. 



Orbed, circular, formed in a circle. 



Orbicular, spherical, circular, round- 

 ish and flat. 



Order, a subdivision of a class, or 

 second branch of systematical ar- 

 rangement. 



Orifice, an opening or perforation. 



Ovate, shaped like the longitudinal 

 section of an e^. 

 P. 



Palmate, webbed, like the (eet of some 

 water birds; deeply divided into 



