GLOSSARY. 567 



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

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



CEPHALOPODA (Gr. kephale ; and podes, 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. 



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



CESTRAPHORI (Gr. kestra, a weapon ; pliero, 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. 



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

 prising the Bats. 



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

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



CHELATE. Possessing chelae ; applied to a limb. 



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

 the Scorpion, supposed to be homologous with antennae. 



CHELONIA (Gr. chelone, a tortoise). The order of Keptiles 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 My- 

 riapoda. 



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



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

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

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



CIRRI (Lat. cirrus, a curl). Tendril-like appendages, such as the feet of Bar- 

 nacles and Acorn-shells (Cirripedes), the lateral processes on the arms of 

 Brachiopoda, &c. 



CIRRIFEROUS or CiRRiGEROUS. Carrying cirri. 



CIRRIPEDIA, CIRRHIPEDIA, or CiRRHOPODA (Lat. cirrus, a curl ; and pes, a 

 foot). A sub-class of Crustacea with curled jointed feet. 



CLADOCERA (Gr. klados, a branch ; keras, a horn). An order of Crustacea with 

 branched antennae. 



CLAVATE (Lat. clavus, a club). Club-shaped. 



CLAVICLE (Lat. clavicula, a little key). The " collar-bone," forming one of the 

 elements of the pectoral arch of Vertebrates. 



CLOACA (Lat. a sink). The cavity into which the intestinal canal and the 

 ducts of the generative and urinary organs open in common, in some In- 

 vertebrates (e.g., in Insects), and also in many Vertebrate animals. 



CLYPEIFORM (Lat. clypeus, a shield ; and forma, shape). Shield-shaped ; ap- 

 , plied, for example, to the carapace of the King-crab. 



CCELENTERATA (Gr. koilos, hollow ; enteron, the bowel). The sub-kingdom 

 which comprises the Hydrozoa and Actinozoa. Proposed by Frey and 

 Leuckhart in place of the old term Radiata, which included other animals 

 as well. 



CCENENCHYMA (Gr. koinos, common ; enchuma, tissue, literally an infxision). 

 The common calcareous tissue which unites together the various corallites 

 of a compound corallum. 



CCENCECIUM (Gr. koinos, common ; oikos, house). The entire dermal system 

 of any Polyzoou : employed in place of the terms polyzoary or polypidom. 



COENOSARC (Gr. koinos, common ; sarx, flesh). The common organised me- 

 dium by which the separate polypites of a compound Hydrozoon are con- 

 nected together. 



COLEOPTKRA (Gr. koleos, a sheath; pteron, wing). The order of Insects 

 (Beetles) in which the anterior pair of wings are hardened, and serve as pro- 

 tective cases for the posterior pair of membranous wings. 



