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GLOSSARY. 



Ascid'ians ("pouched"), a class of 

 tunicates showing marked verte- 

 brate characters. 



A'ves (" birds"), a class of oviparous 

 vertebrates having feathers and 

 warm blood ; the birds. 



Avifau'na ("bird fauna"), the birds 

 of a region collectively. 



Batra'chia (pi.) ("frogs"). See AM- 

 PHIBIA. 



Biol'ogy ("discourse on life"), the 

 science of life and living things. 



Brachiop'odai" arm-footed"), an order 

 of headless bivalve molluscoids 

 having two fleshy spiral arms. 



Branchiop'oda (pi.) ("gill-footed"), a 

 division of crustaceans having gills 

 upon the feet. 



Bryozo'a (pi.) (" moss-animals"). The 

 same as POLYZOA. 



Bunodon'ta (pi.) ("mound-toothed"), 

 a group of artiodactyl mammals, 

 so called from the tubercles on the 

 crowns of the molar teeth. Here be- 

 long the pig and the hippopotamus. 



Carina'tae (pi.) (" keeled"), an order 

 of birds having the breast-bone 

 provided with a keel. By far the 

 largest number of existing species 

 of birds belong to this order. 



Cen'tipedes (" hundred - footed"), a 

 group of myriapodous animals. 



Cephalop'oda (" head-footed"), a class 

 of mollusks having a circle of ten- 

 tacles around the mouth, as the 

 cuttle-fish and squid. 



Ceta'cea (" a sea-animal"), an order 

 of mammals living in the sea, as 

 dolphins and whales. 



Chaetop'oda (" bristle-footed"), a group 

 of worms, including earth-worms. 



Chilog'natha (pi.) (" lip-jawed"), a 

 group, or order, of Myriapoda hav- 

 ing the two lower jaws united to 

 form a lip. 



Chirop'tera (pi.) (" hand-winged"), an 

 order of mammals having the fore 

 limbs adapted for flight ; the bats. 



Cirripe'dia (" curl- footed"), a group 

 of crustaceans having a number 

 of long curled processes like feet ; 

 barnacles. 



Coelentera'ta (pi.) (" hollow entrails"), 

 a large group, or phylum, of radi- 

 ated animals, including the Actin- 

 ozoa, Hydrozoa, and Ctenophora. 



Cce'lom, or Coelo'ma (" hollow"), the 

 body-cavity ; the cavity within the 

 animal body. 



Coelo'mata (pi.) (" hollows"), properly, 

 the plural of CCELOMA ; used also as 

 the designation of those animals 

 which have a coeloma, including 

 vertebrates and many of the inferior 

 animals. 



Coleop'tera (pi.) (*' sheath -winged"), 

 an order of insects with two pairs 

 of wings, the outer serving as a 

 sheath or covering, like the beetle. 



Collem'bola (pi.) (" tail-leapers"), the 

 spring-tails, or snow-fleas; a small 

 group of insect-like creatures gen- 

 erally classed as insects of a low 

 type. 



Copep'oda (pi.) ("oar-footed"), an 

 order of crustaceans with oar-like 

 feet. Many of the low organisms 

 called fish-lice belong here. 



Crania'ta ("having a skull"), those 

 vertebrates that have a brain en- 

 closed in a bony or cartilaginous 

 case or skull. 



Crusta'cea (pi.) (" having a crust or 

 shell"), a class of articulated ani- 

 mals having a shelly coating, like 

 the lobster and crab. 



Ctenoph'ora (pi.) (" comb-bearing"), an 

 order of Coslenterata, comprising 

 many small gelatinous, pellucid, 

 marine forms, characterized by 

 comb-shaped swimming organs. 



Decap'oda (pi.) (" ten-footed"), the 

 highest order of living crustaceans, 

 including the crabs, lobsters, and 

 prawns. 



Dimor'phism ("double form"), the 



