292 APPENDIX. 



di-ce'-cious (Gr. dis, twice, and oikos, house), having the two sexual 

 elements produced by two separate individuals of the same species. 



Dip'-te-ra (Gr. dis, two, and pteron, a wing). 



dis-ar-tic'-u-late (Lat. dis, apart, and articulus, dim. of artus, a joint), 

 to sunder; to separate at the joint. 



dis-coid'-al (Gr. diskos, a round plate, and eidos, form), disk-shaped. 



dis'-tal (Lat. distare, to stand apart), remote from the point of attach- 

 ment. 



di-ver-tic'-u-lum, pi. diverticula (Lat. diverticulum), a blind tube extend- 

 ing outward from a large tube. 



dor'-sal (Lat. dorsum, back), tergal ; opposed to ventral. 



du-o-de'-num (Lat. duodeni, of twelve each : the human duodenum is 

 in length about equal to the breadth of twelve fingers, hence the 

 name), anterior part of small intestine. 



E-chi-no-der'-ma-ta (Gr. echinos, sea urchin, and derma, skin). 



ec'-to-derm (Gr. ektos, outside, and derma, skin). 



ec'-to-sarc (Gr. ektos, outside, and sarx, flesh). 



e-gest' (Lat. e, out, and gerere, to carry), to void. 



el'-y-tron, el'-y-trum, pi. elytra (Gr. elutron, a sheath). 



em'-bry-o (Lat. embryo, Gr. embruon). 



em-bry-ol'-o-gy (Gr. embruon, embryo, and logos, a discourse), the 

 study of the development of embryos. 



en'-do-derm (Gr. entos, within, and derma, skin). 



en'-do-sarc (Gr. entos, within, and sarx, flesh) . 



en-do-skel'-e-ton (Gr. endon, within, and skeleton, a dry body). 



en-dos-mo'-sis (Gr. endon, within, and osmos, a thrusting). 



en-to-mol'-o-gy (Gr. entomon, an insect, and logos, a discourse). 



ep-i-der'-mis (Gr. epi, upon, and derma, skin), cuticle. 



ep-i-glot'-tis (Gr. epi, upon, and glotta, a tongue). 



e-piph'-y-sis, pi. epiphyses (Gr. epi, upon, phuein, to grow). 



e-soph'-a-gus (Gr. oisophagos), gullet. 



eth'-moid (Gr. ethmos, a sieve, and eidos, form). 



Eu-sta'-chi-an, discovered by Eustachius, an Italian physician. 



ev-o-lu'-tion (Lat. evolvere, to roll out of, to unfold). 



ex-cre'-tion (Lat. excernere, to sift out, to discharge). 



ex-o-skel'-e-ton (Gr. exo, outside, and skeleton, a dry body), outside 

 skeleton. 



ex-sert'-ed (Lat. exserere, to stretch forth), projecting beyond some 

 other part. 



ex-ten'-si-ble (Lat. ex, out, and tendere, to stretch), capable of being 

 extended. 



ex-u'-vi-*, pi. exuviae (Lat. exuere, to draw out, to pull off). 



