310 GLOSSARY. 



Coccus.— The genus of Insects including the Cochineal. In these 

 the male is a minute, winged fly, and the lemale generally a 

 motionless, berry-like mass. 



Cocoon.— A case usually ol silky material, in which insects are 

 frequently enveloped during the second or resting-stage (pupa) 

 of their existence. The term " cocoon-stage " is here used as 

 equivalent to " pupa-stage." 



CffiLosPERMOus.— A term applied to those fruits of the Umbellif- 

 erae which have the seed hoUowed on the inner face. 



CoLEOPTERA.— Beetles, an order of Insects, having a biting mouth 

 and the first pair of wings more or less homy, forming sheaths 

 for the second pair, and usually meeting in a straight line 

 down the middle of the back. 



Column.— A peculiar organ in the flowers of Orchids, in which 

 the stamens, style and stigma (or the reproductive parts) are 

 united. 



CoMPOSiT.aB or Compositous Plants.— Plants in which the inflores- 

 cence consists of numerous small flowers (florets) brought to- 

 gether into a dense head, the base of which is enclosed by a 

 common envelope. (Examples, the Daisy, Dandelion, &c.) 



CoNFBEV^. — The filamentous weeds of fresh water. 



CoNQLOMEKATE. — A rock made up of fragments of rock or pebbles, 

 cemented together by some other material. 



Corolla. — The second envelope of a flower usually composed of 

 coloured, leaf-like organs (petals), which may be united by 

 their edges either in the basal part or throughout. 



Correlation. — The normal coincidence of one phenomenon, char- 

 acter, &c., with another. 



Corymb. — A bunch of flowers in which those springing from the 

 lower part of the flower stalk are supported on long stalks so 

 as to be nearly on a level with the upper ones. 



Cotyledons. — The first or seed-leaves of plants. 



Crustaceans. — A class of articulated animals, having the skin of 

 the body generally more or less hardened by the deposition of 

 calcareous matter, breathing by means of gflls. (Examples, 

 Crab, Lobster, Shrimp, &c.) 



Curculio. — The old generic term for the Beetles known as Wee- 

 vils, characterised by their four-jointed feet, and by the head 

 being produced into a sort of beak, upon the sides of which 

 the antennae are inserted. 



Cutaneous. — Of or belonging to the skin. 



