670 GLOSSARY. 



Caruncle. (Lat. caruncida.) A soft wart-like eminence. 



Caodal. (Lat. Cauda, a tail.) Belonging to the tail. 



Cauda Equina. The brush of nerves which terminates the spinal marrow in the 



!*■. human siilyect, and the homologous part in the lower animals. 



Cellular tissue. (Lat. cella, a cell.) The elastic connecting tissue of the dif- 

 ferent parts of the body, which every where forms cells or interspaces containing 

 fluid. 



Centipede. (Lat. centum, a hundred ; pes, a foot.) A genus of insects with very 

 numerous feet. 



Cephalo-thorax. (Gr. hephale, head ; thorax, chest.) The anterior division of 

 the body in spiders, scorpions, &c., which consists of the head and chest blended 

 together. 



Cephalic. (Gr. kephale, head.) Belonging to the head. 



Cephalopoda. (Gr. kephale; poda, feet.) The class of molluscous animals in 

 which long pi-ehensile processes or feet pi'oject from the head. 



CERCARI.E. (Gr. kerkos, a tail.) The animalcules whose body is terminated by a 

 tail-like appendage. 



Cercariform. Shaped like Cercariae. 



Cerce. (Gr. kerkos, a tail.) The feelers which project from the hind part of the 

 body in some insects. 



Cere ALIA. {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. chele, 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 in- 

 sects typified by the Gally-worm or lulus. 



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

 typified by the Centipede. 



Chitine. (Gr. chiton, a coat.) The peculiar chemical principle which forms the 

 integument of insects. 



Chlorophyll. (Gr. chloros, light green ; phyllos, a leaf.) The colouring matter 

 of the leaves and some other parts of plants. 



Choledochus. (Gr. chole, bile ; dbche, 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. 



Chrysalids. (Gr. chrusos, gold.) The stage of the buttei-fly immediately preced- 

 ing its period of flight, when it is passive, and enclosed in a case which sometimes 

 glitters like gold . 



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

 by the action of the bile. 



CiiYJiE. (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. cUium ; 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 cii'clc. 



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

 barnacles. 



