GLOSSARY. 629 



Ceb-pus'ou-lae (Lat. crepueeuhim, dusk). Applied to animals -vpliicli are 

 active in the dusk or twiliffht. 



Cki-noi'de-a (Gr. hrirum, a lily ; eidos, form). An order of Echinodermata, 

 comprising forms -wliioh. are usually stalked, and sometimes resemble lilies 

 m shape. 



Ckoo-o-dil'ia fGr. hroTeodeiloa, a crocodile). An order of Eeptiles. 



Chop. A partial dilatation of the gullet, technioally called " mgluvies." 



Crus-ta'oe-a (Lat. crueta, 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-otst (Gr. Ueis, a comb : husHa, a hag or cyst)-. The sense-organ (prob- 

 ably auditory) which ocovirs m the Ctmophora. 



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

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

 jections. 



Cte-noph'o-ka (Gr._fe«is, a comb ; and ^Aero, I carry). An orier of Aetinosoa, 

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

 bands of cilia arranged in comb-like plates. 



Cdk-so'kes (Lat. curro, I run). An order of Aves, comprising birds destitute 

 of the power of flight, but formed for running vigorously («. g., the Ostrich 

 and Emeu). 



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



Cd'ti-ole (Lat. cutiada, dim. of ctrfw, skin). The pellicle which forms the 

 outer layer of the body among the Infiisoria, The outer layer of the in- 

 tegument generally. 



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

 called the euUs vera, the coriwm, or the derma. 



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

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



Cy-oios'to-mi. Sometimes used to designate the Hag-fishes and Lampreys, 

 forming the order MarmpohrancMi. 



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



Cts'tic. 



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

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

 was discovered. 



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

 £cMnodermaia. 



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



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



are ten arms or cephalic processes. 

 De-oid'c-ohs (Lat. decido, 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 apcK 



of which falls off in the course of growth. 

 Dei-wo-sau'ei-a (Gr. demos, terrible ; sawra, lizard). An extinct order of , 



Eeptiles. 

 Deh'dei-poem, Den-deit'io, Den'deoid (Gr. dendron, a tree). Branched like 



a tree, arborescent. 

 Den'tal. 

 Dew-ti-eos'tbes (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. {8ee Cutis.) 



Dee'mal (Gr. derma, skin). Belonging to the integument. 

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



occur in the tissues of some of the AUyomdce (Actmozoa). 

 DEB-MiD'i-.«i. Minute fresh-water plants, of agreen color, without a siliceous 



epidermis. ^ % m, 



Deu-tee-o-zo'6ids (Gr. deuteros, second; zoon, animal; eidos, form). The 



zoCids whioh are produced by gemmation from zooids. 



