GLOSSARY. 329 



CBB-pns'ou-LAB (Lat. crepusculum, dusk). Applied to animals wliicli are 

 active in the dusk or twilight. 



Cbi-noi'de-a (Gr. krinon, a lily ; eidos, form). An order of EcMnodermata, 

 comprising forms which are usually stalked, and sometimes resetoljle lilies 

 in shape. 



Ceoo-o-dil'ia (^Gr. hrokodeilos, a crocodile). An order of Eeptiles. 



Crop. A partial dilatation of the gullet, technically called " mgluvies." 



Cbus-ta'oe-a (Lat. cnnta, a crust). A class of articulate animals, comprising 

 Crabs, Lobsters, etc., characterized by the possession of a hard shell or 

 crust, which they cast periodically. 



Cten'o-ctst (Gr. hteis, a comb j TcusUs, a bag or cyst). The sense-organ (prob- 

 ably auditory) which occurs m the CUnophora. 



Cte'noid (Gr. kteis, a comb ; eidos, form). Applied to those scales of fishes, 

 the hinder margins of which are fringed with spines or comb-like pro- 

 jections. 



Cte-noph'o-sa (Gr. Bcis, a comb ; and ^A«ro, I carry). An order of .4cfa'»oaoffl, 

 comprising oceanic creatures, which swim by means of " ctenophores," or 

 bands of cilia arranged in comb-like plates. 



Ccb-so'bes (Lat. eurro, I run). An orcler of Avea, comprising birds destitute 

 of the power of hight, but formed for running vigorously (e. g., the Ostrich 

 and Emeu). 



Cus'pi-DATE. Furnished with small pointed eminences or " cusps." 



Cu'ti-ole (Lat. eutimla, 'dim. of cutis, skin). The pellicle which forms the 

 outer layer of the body among the Infueoria. The outer layer of the in- 

 tegument generally. 



Cu'tis (Lat. for skin). The inferior vascular layer of the Integument, often 

 called the eiiUs vera, the corium, or the derma. 



Ct'oloid (Gr. icuhhs, a circle ; eidos, form). Applied to those scales of fishes 

 which have a regularly circular or elliptical outline with an even margin. 



Ct-olos'to-mi. Sometimes used to designate the Hag-fishes and Lampreys, 

 forming the order Marsipoiranchii. 



Cyst (Gr. hustis, a bladder or bag). A sac or vesicle. 



Cys'tio. 



Cys'ti-oa. The embryonic forms (scolioes) of certain intestinal worms (Tape- 

 worms), which were described as a distinct order, until their true nature 

 was discovered. 



Cys-toi'de-a. (Gr. kustia, a bladder; and eidos, form). An extinct order of 

 \Echi7wdermata. 



De-oap'o-ca (Gr. deha, ten; podes, feet). The division of Crustacea which 



have ten ambulatory feet; also the family of Cuttle-fishes, in which there 



are ten arms or cephalic processes. 

 De-oid'tj-ous (Lat. deaido, I fall off). Applied to parts which fall off or are 



shed during the life of the animal. 

 De-ool'la-ted (Lat. decoUo, I behead). Applied to univalve shells, the apex 



of which falls oflF in the course of growth. 

 Dei-no-sau'ei-a (Gr. deinos, terrible ; saura, lizard). An extinct order of 



Eeptiles. 

 Deu'dbi-eoem, Den-deit'io, Den'deoid (Gr. dendron, a tree). Branched hke 



a tree, arborescent. 

 Den'tal. 

 Dflir-Ti-EOs'TBEa (Lat. dens, a tooth ; rostrum, a beak). The group of Perching 



Birds in which the upper mandible of the beak has its lower margin toothed. 

 Deb'ma. (See Cutis.) 



Deb'ual (Gr. derma, skm). Belonging to the integument. 

 Dee-mo-sole'eites (Gr. derma, skin ; skleros, hard). Masses of spicules which 



occur in the tissues of some of the AUyonidce (Actinozoa)._ 

 DES-MiD'i-ji. Minute fresh-water pi mts, of a green color, without a siliceous 



epidermis. . v mu 



Dsu-TEB-o-zo'oms (Gr. deuteros, second; noon, animal; eidos, form). The 



zooids which are produced by gemmation from zoOids. 



