GLOSSARY. 35 



Cte'noid (Gr. kteis, ktenos, a comb; eidss, form). A term 

 applied to the scales of fishes which have comb-like edges. 



Ctenoph'ora (Gr. kteis, ktenos, a comb ; phoreo, I bear). A 

 group of the Actinozoa which possess swimming organs 

 in the shape of comb-like bands of cilia. 



Ctenosto'mata (Gr. kteis, ktenos, a comb; stoma, stomatos, a 

 mouth, opening). A group of the Polyzoa. 



Cuboi'des (Gr. kubos, a cube; eidos, form). One of the bones 

 of the tarsus. 



Culm (L. culmus, a stalk). The stem or stalk of grasses. 



Cuma'cea (Gr. kuma, a wave). A group of the Crustacea. 



Cu'mulus (L. a heap). A thickened portion of the lining cellu- 

 lar layer of a ripe Graafian follicle, in which the ovum is 

 embedded, and which is usually termed the discus proligerus. 



Cu'neiform cartilage (L. cuneus, a wedge;/^w#, form). A 

 very small cartilaginous body placed on each side of the 

 larynx in the fold of mucous membrane which extends 

 from the arytenoid cartilage to the epiglottis. 



Cu'neiforme (L. cuneus, a wedge ; forma, form). One of the 

 bones jof the carpus, sometimes termed ulnare. Also 

 applied, according to one system of nomenclature, to three 

 of the bones of the tarsus. 



Cu'pola (Italian, a dome). The summit of the cochlea of the 

 internal ear. 



Cur'sores (L. curro, I run). According to the old scheme of 

 classification of the class Aves, an order which included 

 those birds which are destitute of the power of flight. 



Cus'pidate (L. cuspis, the point of a weapon). Having pointed 

 eminences or " cusps." A term sometimes applied to the 

 canine teeth. 



Cuta'neous (L. cutis, the skin). Relating to the skin. 



Cu'ticle \ ^" ^ mi * ^ cu ^ s '> t ^ ie skin)- Another name for the 



CutFcula 1 epidermis. In plants, the thin layer which 

 L covers the epidermis. 



Cu'tis ve'ra (L. true skin). The under vascular and sensitive 

 layer of the skin, also termed the dermis. 



Cyano'sis (Gr. kuanos, dark-blue). A condition in which the 

 skin is blue, as the result of the non-closure of the foramen 

 ovale between the auricles of the heart, and the consequent 

 imperfect aeration of the blood. 



Cyathozo'oid (Gr. kuathos, a cup, bowl ; zoon, an animal ; eidos, 

 shape). A structure formed in the course of development 

 in some of the Ascidioida. 



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