OF CONCHOLOGY. 157 



Membrane, a web of several sorts of 

 fibres. 



Membranaceous, consisting of mem- 

 branes. 



Mottled, clouded or spotted with 

 various colours. 



Mucronate, ending in a sharp rigid 

 point. 



Muricated, clothed with sharp rigid 

 points. 



N. 



Nemoral, of or belonging to a wood, 



Nited, glossy. 



Nodous, a knot. 



Nucleus, a kernel. 



Nymphae, the cartilage to which the 

 hymen is attached ; they are con- 

 cealed by the hymen. 

 O. 



Ob, in composition is used for in- 

 versely or inverted ; as obconic, in- 

 versely conic ; ohcordate, inversely 

 heart-shaped, &c. 



Oblique, slanting 



