GLOSSARY. 393 



Imbricated, lapping over each, other like the tiles of a house. 



Inarticulate, without joints. 



Incrassated, thickened in any part. 



Incurved, bent inwards. 



Inflected, bent inwards. 



Inosculation, the union of two vessels at their extremities. 



Integument, a .natural covering of the body, as the skin. 



Interstice, the space between elevations and depressions. 



Invertebrate, destitute of a backbone. 



Involute, rolled inwards. 



Iridescent, having colours like the rainbow. 



Juncture, a joint or articulation. , 



Labial, pertaining to the lip. 

 Lamellate A, divided into layers or plates. 

 Lanceolate, tapering to a point like a lance. 

 Larynx, the upper part of the windpipe. 

 Latticed, in open squares like net-work. 

 Lobed, having lobes or broad finger-like divisions. 

 Lunated, in the shape of a crescent. 



Mammillated, having little globes like nipples. 

 Mesial or Medial, placed in the middle. 

 Mucronate, ending in a mucro or sharp rigid point. 

 Muricated, rough with points. 



Nascent, beginning to exist. 



