GLOSSARY. 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; aodttfero, I carry). Used synonymously with 

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



CEPHALOPODA (Gr. kei>hale; and poda, feet). A class of the Moliusca, 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. 



CESTOID EA (Gr. kestos, a girdle). An old name for the Tvcniada, 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 of Mammals comprising the Whales 

 and Dolphins. 



CH.ETOGNATHA (Gr. chaite, bristle ; gnathos, jaw). An order of the Anarlhro- 

 poda, comprising only the oceanic genus Sagitta. 



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

 prising the Bats. 



CHELAE (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 chelae ; applied to a limb. 



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

 the Scorpion, supposed to be homologous with antenna?. 



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

 Tortoises and Turtles. 



CHELONOBATRACHIA (Gr. chelonc, 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 ; arid 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 (Annelidas, 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 



