820 GLOSSARY 



or tentacles, which, in most living species, are furnished 

 with sucking-cups. {Examples, Cuttle-fish, Nautilus.) 



Cetacea. — An order of Mammalia, including the Whales, 

 Dolphins, etc., having the form of the body fishlike, the 

 skin naked, and only the fore-limbs developed. 



Chelonia. — An order of Eeptiles including the Turtles, 

 Tortoises, etc. 



CiRKiPEDS. — An order of Crustaceans including the Bar- 

 nacles and Acorn-shells. Their young resemble those of 

 many other Crustaceans in form; but when mature they 

 are always attached to other objects, either directly or 

 by means of a stalk, and their bodies are inclosed by 

 a calcareous shell composed of several pieces, two of 

 which can open to give issue to a bunch of curled, 

 jointed tentacles, which represent the limbs. 



Coccus.— The genus of Insects including the Cochineal. 

 In these the male is a minute, winged fly, and the female 

 generally a motionless, berry-like mass. 



Cocoon. — A case usually of 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." 



CcELOSPERMOus.— A term applied to those fruits of the 

 Uinbelliferse which have the seed hollowed on the 

 inner face. 



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

 mouth and the first pair of wings more or less horny, 

 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. 



Composite or Compositous Plants.— Plants in which the 

 inflorescence consists of numerous small flowers (florets) 

 brought together into a dense head, the base of which is 

 inclosed by a common envelope. {Examples, the Daisy, 

 Dandelion, etc.) 



