INDEX-GLOSSARY. 373 



Energy, 9. 



Enterocoele (evripov, an intestine; K-oiAos, hollow) A body cavity (coelom) 



formed by the outgrowth of pouches from an archenteron, 150. 

 Environment, 347. 

 Epiblast (eirl, upon; j8Xa(rros, a growth) The ectoderm of a developing 



embryo, 27. 

 Epiboly (eTrt, upon; /3o\j, a throwing, casting) Formation of a gastrula 



by overgrowth of ectoderm cells, 148. 

 Epidermis (t^ri, upon; dermis) Simple columnar or stratified squamous 



epithelium covering the external surface. See Skin. 

 Epididymis (eTrt, upon; oi<5v/xo, the testicles) A convoluted region of the 



spermiduct, 80, 298, 334. 

 Epiglottis (t-Tri, upon; glottis), 285. 

 Epimerite, 17, 18. 

 Epimeron (tiri, upon ; M e V s 5 a part), in the Crayfish The part of a segment 



situated between the pleuron and the attachment of the appendage, 



84. 



Epiphragm (<bri, upon; <payM, a fence, a partition), 123. 

 Epiphysis (tirt, upon; </>u<ri?, growth, a growing), in bones A separately 



ossified end, 185, 239, 280. 

 Epipodite (l-ri, upon; TTOUS, TO&OI, a foot), in the Crayfish appendages A 



process which (usually) bears gill-filaments, 178, 185. 

 Episkeletal, of muscles Superficial to the endoskeleton, 208. 

 Episternum, 185. 

 Epithelium Cell-layers covering external and lining internal surfaces, 29, 



177; Ciliated, 113, 117, 193; Germinal, 34, 202; Glandular, 94, 118, 



244; Olfactory, 218; Simple columnar e., 31, 57, 121, 244; Stratified, 



squamous e., 244. 

 Ethiopian region, 350, 351. 

 Ethmo-palatine bar, 180, 182. 

 Europe, 349. 



Eustachian tube, 189, 219, 233, 255, 274; e. valve, 245, 267, 290. 

 Eutheria (cw, well ; Qnpiov, a beast), 346. 



Eversion (evcrto, I turn out) The process of turning a part inside out, 19. 

 Evolution, 347. 



Excretion A waste product cast out by the body, 10, 14, 31. 

 Excretory System Amoeba, 10 ; Vorticella, 14 ; Distoma, 30, 31 ; Tsenia, 



41; Ascaris, 49; Lumbricus, 60; Hirudo, 80; Astacus, 98; Anodonta, 



Unio, 118; Helix, 129; Amphioxus, 143; Scyllium, 166; Rana, 205; 



Columba, 250; Chick, 265; Lepus, 295; Homo, 333; Comparison of, 



316. 

 Exits, of nerves, 233, 274. 



