160 



CONCHOLOGY. 



Lenticulate, doubly convex. 



Ligament, a solid body which 

 connects the valves in bi- 

 valves. 



Linear, composed of lines. 



Linguiformed, tongue-shaped. 



Lip, the outer edge of the aper- 

 ture of univalves. 



Lobated, rounded at the edges. 



Longitudinal, the length of the 

 shell. 



Lunated, formed like a half 

 moon. 



Lunule, crescent-like. 



Luniform, shape of a crescent. 



M. 



Margin, the whole circumfe- 

 rence or outline of the 

 shell in bivalves. 



Marginated, having a promi- 

 nent margin or border. 



Membrane, a web of fibres. 



Mouth, see Aperture. 



Muscular impressions, marks 

 made by the animal in ad- 

 hering to the shell. 



Mottled, clouded or spotted. 



Mucronate, ending in a sharp 

 point. 



Multilocular, many chambered. 



Muricated, clothed with sharp 

 spines. 



N. 

 N acred, pearly. 



Nemoral, belonging to a wood. 

 Nited, glossy. 

 Nodose, knotty. 

 Nucleus, a kernel. 



O. 



Obsolete, obliterated. 

 Oblong, oval. 

 Ocellated, eye-like spots. 

 Ochreous, colour of yellow ochre. 



OfFuscated, darkened, clouded. 



Olivaceous, of a greenish olive 

 colour. 



Operculum, which closes the 

 aperture of the shell. 



Orbicular, circular, round. 



Orifice, an opening or perfora- 

 tion. 



Ovate, shaped like an egg. 



Ovoid, oval. 



P. 



Papillose, pimple, dotted. 



Papyraceous, thin as paper. 



Patulous, with a gap or opening. 



Partitions, processes dividing 

 the shells of the Nautilus, 

 Serpula, &c. 



Pectinated, resembling the teeth 

 of a comb. 



Pedicle, the support of the Ana- 

 tifera and its corresponding 

 species. 



Peduncle, a tube on which any 

 thing is seated. 



Pellucid, transparent, clear, 

 bright. 



Pentagonal, having five sides. 



Perforated, pierced with holes. 



Pervious, admitting passage. 



Pillar, in univalves the internal 

 continuation of the colu- 

 mella or inner lips, extend- 

 ing from the base to the 

 apex. 



Pinnated, winged. 



Plaited, folded. 



Plaits, folds. 



Plicated, folded or plaited. 



Posterior, see Margin. 



Produced, lengthened out. 



Protrude, to thrust forward. 



Punctuated, like the punctures 

 of a thimble. 



Pyriform, pear-shaped. 



