GLOSSARY. t 577 



the head. Applied to a section of the Annelida, which, like the Serpulce, 



have tufts of external gills placed upon the head. 

 CEPHALOPHORA (Gr. kephale; and phero, I carry). Used synonymously with 



Encephala, to designate those Mollusca which possess a distinct head. 

 CEPHALOPODA (Gr. ke/ihale; and poda, feet). A class of the Mollusca, com- 

 prising the Cuttle-fishes and their allies, in which there is a series of arms 



ranged round the head. 

 CEPHALOTHORAX (Gr. kephale; and thorax, chest). The anterior division of 



the body in many Crustacea and Arachnida, which is composed of the 



coalesced head and chest. 



CERE. The naked space found at the base of the bill of some birds. 

 CERVICAL (Lat. cervix, neck). Connected with the region of the neck. 

 CESTOIDEA (Gr. kestos, a girdle). An old name for the Tccniada, a class of 



Intestinal Worms with flat bodies like tape (hence the name Tapeworms). 

 CESTRAPHORI (Gr. kestra, a weapon ; phero, I carry). The group of Elasmo- 



branchii represented at the present day by the Port Jackson Shark. 

 CETACEA (Gr. ketos, a whale). The order ot Mammals comprising the Whales 



and Dolphins. 

 CHJJTOGNATHA (Gr. chaite, bristle ; gnathos, jaw). An order of the Anarlh.ro- 



poda, comprising only the oceanic genus Sagitta. 



CHEIROPTERA (Gr. cheir, hand ; pteron, a wing). The order of Mammals com- 

 prising the Bats. 

 CHEL.E (Gr. chele, a claw). The prehensile claws with which some of the 



limbs are terminated in certain Crustacea, such as the Crab, Lobster, &c. 

 CH ELATE. Possessing chelaB ; applied to a limb. 

 CHELICER^E (Gr. chele, a claw ; and keras, a horn). The prehensile claws of 



the Scorpion, supposed to be homologous with antennae. 

 CHELONIA (Gr. c/telone, a tortoise). The order of Reptiles comprising the 



Tortoises and Turtles. 

 CHELONOBATRACHIA (Gr. chelone, a tortoise ; batrachos, a frog). Sometimes 



applied to the Amphibian order of the Anoura (Frogs and Toads). 

 CHILOGNATHA (Gr. cheilos, a lip; and gnathos, a jaw). An order of the 



Myriapoda. 



CHILOPODA (Gr. cheilos ; and poda, feet). An order of the Myriapoda. 

 CHITINE (Gr. chiton, a coat). The peculiar chemical principle, nearly allied 



to horn, which forms the exoskeleton in mauy Invertebrate Animals, espe- 

 cially in the Arthropoda (Crustacea, Insecta, &c. ) 

 CHLOROPHYLL (Gr. chloros, green ; and phyllos, a leaf). The green colouring 



matter of plants. 

 CHROMATOPHORES (Gr. chroma, complexion, or colour ; and phero, I carry). 



Little sacs which contain pigment-granules, and are found in the integu- 

 ment of Cuttle-fishes. 

 CHRYSALIS (Gr. chrusos, gold). The motionless pupa of butterflies and moths, 



so called because sometimes exhibiting a golden lustre. 

 CHYLAQUEOUS FLUID. A fluid consisting partly of water derived from the 



exterior, and partly of the products of digestion (chyle), occupying the 



body-cavity or perivisceral space in many Invertebrates (Annelides, Echino- 



derms, &c.), and sometimes having a special canal-system for its conduction 



(chylaqueous canals). 

 CHYLE (Gr. chulos, juice). The milky fluid which is the result of the action of 



the various digestive fluids upon the food. 

 CHYLIFIC (Gr. chulos, juice [chyle] ; and Lat. facio, I make). Producing 



chyle. Applied to one of the stomachs, when more than one is present. 



The word is of mongrel origin ; and " chylopoietic" is more correct. 

 CHYME (Gr. chumos, juice). The acid pasty fluid produced by the action of 



the gastric juice upon the food. 



CHYME-MASS. The central, semi-fluid sarcode in the interior of an Infusorian. 

 CILIA (Lat. cilium, an eyelash). Microscopic, hair-like filaments, which 



have the power of lashing backwards and forwards, thus creating currents 



in the surrounding or contiguous fluid, or subserving locomotion in the 



animal which possesses them. 

 VOL. II. 2 O 



