GLOSSARY 300 



Bryozoa (bri' o zo' a). A group of marine and freshwater animals of uncertain rank 

 and relationships, mostly colonial, bearing tentacles, and commonly known as 

 moss animals. Sometimes placed in a phylum with the Phoronidea and Brachi- 

 opoda. 



Buccal cavity, {huk' k'l). See buccal pouch. 



Buccal pouch {huk' k'l). The most anterior division of the digestive tract of an 

 earthworm. Also the mouth cavity of other animals. 



Budding {hud' ding). The division of an organism into unequal parts. 



Buflfon, Comte de {hiifoN'). Trench naturahst, 1707-1788. 



Buf o {hu' fo) . A genus of toads. 



Bugula (bu' gula). A genus of Bryozoa. 



Buprestis {hu pres' tis). A genus of beetles. 



Byssus {his' sus). A thread attached near the adductor muscle of a glochidium; 

 or a bunch of threads attached to the foot of certain clams. 



Caberea {ka he' re a). A genus of Bryozoa. 



Calcarea {kal ka' re a). A class of sponges (Porifera) whose skeletons are composed 

 of spicules of calcium carbonate. 



Calorific {kal' o rif ik). Heat-producing. 



Cambarus {kam' ha rus). A genus of craj'fishes. 



Cambi'an {kam' bri an). Of the earliest Paleozoic time. 



Camelidae {kn mel' i dee). The family of camels. 



Camelus {ka me' lus). The genus of camels. 



Camponotus {kam' po no' tus). A genus of ants. 



Canaliculus {kun' alik' ulus). One of numerous minute channels radiating from 

 each lacuna in the matrix of bone, in which slender processes of the bone cells are 

 located. 



Cancellate {kan' sel late). Composed of a number of chambers separated by parti- 

 tions ; said of spongy bone. 



Canine {ka' nine). A tooth located laterally to the incisors. 



Capillary {kap' il la ri). One of numerous small vessels conveying blood through 

 the tissues from arteries to veins or from one vein to another. 



Carapace {kai' a pase). The hard bony covering of a turole; also the chitinous 

 or calcareous covering of the cephalothoiax of a crayfish or lobster. 



Carbohydrate {kar' bo In' drale). Any one of a class of organic substances, embracing 

 the starches, sugars, cellulose, etc., which are composed of carbon, hj'drogen and 

 oxygen, with the number of atoms of hydrogen and oxygen regularlj'^ in the ratio of 

 2 to 1. 



Carboniferous {kar' bo nif er us). The geological age to which the principal known 

 coal beds belong; late Paleozoic, succeeding the Devonian. 



Carboxyl radical {kar boks' il). The radical COOH found in organic acids. 



Carchesium {kar ke' zi um). A genus of colonial ciliated Protozoa, resembling 

 Vorticella. 



Cardiac {kar' di ak). Pertaining to or near the heart. 



Carettochelydidae {ka ret' to ke lid' i dee). A family of turtles. 



Carnivore {kar' ni vore). Technically, a mammal of the order Carnivora, including 

 the cats, dogs, and seals. In a popular sense, any flesh-eating animal. 

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