328 GLOSSARY. 



careous tissue which unites together the various corallites of a compound 

 corallu7n. 



COE-NOE'CI-UM (Gr. koinos, common ; oikos, house). The entire dermal system 

 of any Polyzoun ; employed in place of the terms polyzOary or polypidoin. 



C<EN'O-SARC (Gr. koinos, common ; sarx, flesh). The common organized me- 

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

 nected together. 



COL-E-OP'TER-A (Gr. koleos a sheath 5 pteron, wing). The order of Insects 

 (Beetles) in which the anterior pair of wings are hardened, and serve aa 

 protective cases for the posterior pair of membranous wings. 



COL-U-BRI'NA (Lat. coluber, a snake). A division of the Ophidia. 



COL-UM-BA'CE-I (Lat. columba, a dove). The division of Rasorial Birds com- 

 prising the Doves and Pigeons. 



COL-U-MEL'LA (Lat. dim. of coluinna, a column). In Conchology, the central 

 axis round which the whorls of a spiral univalve are wound. Amongst the 

 Actinozoa, it is the central axis or pillar which is found in the centre of the 

 thecse of many corals. 



COL'UMN. Applied to the cylindrical body of a Sea-anemone (Actinia) ; also 

 to the jointed stem or peduncle of the stalked Orinoids. 



COM-MIS'SU-RAL (Lat. committo, I solder together). Connecting together ; 

 usually applied to the nerve-fibres which unite different ganglia. 



CON'CHA (Lat. for a shell). The external ear by which sounds are collected 

 and transmitted to the internal ear. 



CON-CHIF'E-RA (Lat. concha, a shell : fero, I carry). Shell-fish. Applied in a 

 restricted sense to the bivalve Molluscs, and used as a synonym for Lamelli- 

 branchiata. 



CON'DYLE (Gr. kondulos, a knuckle). The surface by which one bone articu- 

 lates with another. Applied especially to the articular surface or sur- 

 faces by which the skull articulates with the vertebral column. 



CON-I-ROS'TRES (Lat. conus, a cone ; rostrum, a beak). The division of Perch- 

 ing Birds with conical beaks. 



CO-PEP' O-DA (Gr. hope, an oar; podes, feet). An order of Crustacea. 



COR'A-COID (Gr. Tcorax, a crow ; eidos, form). One of the bones which enters 

 into the composition of the pectoral arch in Birds, Reptiles, and Monp- 

 tremes. In most Mammals it is a mere process of the scapula, having, in 

 man, some resemblance in shape to the beak of a crow. 



COR-AL-LIG'EN-OUS. Producing a corallum. 



COR'AL-LITE. The corallum secreted by an Actinozoon which consists of a 

 single polype : or the portion of a composite corallum which belongs to, 

 And is secreteu by, an individual polype. 



COR-AI/LTJM (from the Latin for red coral). The hard structures deposited in, 

 or by. the tissues of an Actinozoc.n commonly called a u coral." 



CO-RI-A CEOUS (Lat. corium, hide). Leathery. 



COR'PUS CAL-LO'SUM (Lat. for the "firm body ") The great band of nervous 

 matter which unites the two hemispheres of the cerebrum in the Mammals. 



COR-PUS'CU-LA-TED (Lat. corpusculum, a little body or particle). Applied to 

 fluids which, like the blood, contain floating solid particles or " corpuscles." 



COR'TI-CAL LAY'ER. The layer of consistent sarcode, which in the Infusoria 

 encloses the chyme mass, and is surrounded by the cuticle. Sometimes 

 called the "parenchyma of the body." 



CO-RYN'I-DA. 



outer surface of the theca, and mark the position of the septa within. 

 COS'TAL (Lat. costa, a rib). Connected with the ribs. 

 CBA'NI-UM (Gr. kranion, the skull). The bony or cartilaginous case in which 



the brain is contained. 

 CRAS'PE-DA (Gr. kraspedon, a margin or fringe). The long, convoluted cords, 



containing thread-cells, which are attached to the free margins of the 



mesenteries of a Sea-anemone, 



