376 GLOSSARY. 



Cerealia. ( Ceres, the Goddess of corn.) The name of the natural family of plants 

 which produce corn, oats, rye, &c. 



Cestoidea. (Gr. kestos, a girdle.) The order of intestinal worms with long and 

 flat bodies like tape, usually called tape-worms. 



Chelonia. (Gr. chelone, a turtle.) The order of reptiles including the tortoises 

 and turtles. 



Chele. (Gr. chde, a claw.) Applied to the bifid claws of the Crustacea, scor- 

 pions, &c. 



Chelicera. (^Gr. chele, a claw ; keras, a horn.) The prehensile claws of the 

 scorpion, which are the homologues of Antenna?. 



Chilognatha. (Gr. cheilos, a lip; gnathos, a jaw,) The order of many-footed 

 insects typified by the Gally-worm or lulus. 



Chilopoda. (Gr. cheilos, a lip; poc?a, feet.) An order of many-footed insects 

 typified by the Centipede. 



Chitine. (Gr. chiton, SL coat.) Tlie peculiar chemical principle which hardens the 

 integument of insects. 



Choledochus. (Gr. chole, bile; cloche, receptacle.) The tube formed by the 

 union of the hepatic and cystic ducts. 



Chorion. From the Greek word signifying the membrane which encloses the 

 foetus, and applied generally to the outer covering of the ovum. 



Chrvsalids. ( Gr. chrusos, gold.) The stage of the butterfly immediately pre- 

 ceding its period of flight, when it is passive, and enclosed in a case which some- 

 times glitters like gold. 



Chyle. (Gr. chulos, juice.) The nutrient fluid extracted from the digested food 

 by the action of the bile. 



Chyme. (Gr. chumos, juice.) The digested food which passes from the stomach 

 into the intestines. 



Cicatrix. From the Latin, signifying scar. 



Cilia. ( Lat. cilium, an eyelash. ) The microscopic hair-like bodies which cause, 

 by their vibratile action, currents in the contiguous fluid, or a motion of the body 

 to which they are attached. 



Ciliated. Provided with vibratile cilia. 



Ciliobrachiata. The class of Polypes in which the arms are provided with vibra- 

 tile cilia. 



Ciliogrades. (Lat. cilium; and gradior, I walk.) The order of Acalepha; which 

 swim by the action of cilia. 



Circumgyrations. (Lat. circum, around ; gyrus, a circle.) Motions in a circle. 



Cirri. (Lat. cirrus, a curl.) The curled filamentary appendages, as the feet of the 

 barnacles. 



CiRRiGEROus. Supporting cirri. 



Cihrigrades. Moving by cirri. 



CiRRiPEDs or Cirripedia. (Lat. cirrus, a curl ; pes, a foot.) A class of articulate 

 animals having curled jointed feet. Sometimes written Cirrhipedia and Cirrho- 

 poda. 



Clavate. (Lat. claims, a. club.) Club-shaped; linear at the base, but growing 

 gradually thicker towards the end. 



Cloaca. (Lat. c/oaca, a sink. ) The cavity common to the termination of the 

 intestinal, urinary, and generative tubes. 



Clypeiform. (Lat. clypeus, a shield ; ybrma, shape.) Shield-shaped; applied to 

 the large prothorax in beetles. 



CoA rotate. (Lat. coarcto, I compress.) The pupa of an insect, which is enve- 

 loped by a case, which gives no indication of the parts it covers. 



Ccelelmintha. (Gr. ^o/Zos, hollow ; helmins, an intestinal worm.) The intestinal 

 worms which are hollow, and contain an alimentary tube in the cavity of the body. 



Coleoptera, (Gr. koleos, a sheath ; pteron, a wing.) The order of insects in 

 which the first pair of wings serves as a sheath to defend the second pair. 



Columella. (Froin the Latin for a small column.) Used in Conchology to signify 

 the central pillar around which the spiral shell is wound. 



Commissural. (Lat. coinmitto, I solder.) Belonging to a line or part by which 

 other parts are connected together. 



