GLOSSARY. 331 



Eo'dt-sis (Gr. ekdusia, a Gtripping off). A sliedding or moulting of the skin. 



E-OHi-NO-ooo'oi (Gr. echinos, a hedgehog ; kohhoa^ a, berry). The larval forms 

 (scolioes) of the tapeworm of the dog {_Tmnia ecMnococeue), commonly 

 known as " hydatids." 



E-chi-no-dek'ma-ta (Gr. ecMnos; and derma, skin). A class of animals com- 

 prising the Sea-urchins, Star-fishes, and others, most of which have spiny 

 skins. 



E-ohi-noi'de-a (Gr. echinos ; and eidos, form). An order of Schinodermata, 

 comprising the Sea-urchins. 



E-ohin'u-late. Possessing spines. 



Eo'to-otst (Gr. eletoa, outside ; kustis, a bladder). The external investment 

 of the coenoecium of a Fblyzoon. 



Eo'TO-nEBM (Gr. ektoa ; and derma, skin). The external integumentary layer 

 of the Otelenterata. 



Eo'to-saeo (Gr. eUoa ; aarx, flesh). The outer transparent saroode-layer of 

 certain BTmopods, such as the Amoeba. 



E-den-ta'ta (Eat. e, without; dene, tooth). An order oi Mammalia often 

 called Mruta. 



E-den'tu-lous. Toothless ; without any dental apparatus. Applied to the 

 mouth of any animal, or to the hinge of the bivalve Molluscs. 



E-dbi-oph-thal'ma-ta (Gr. hedraioa, sitting ; ophthahnoa, eye). The division of 

 Crustacea in which the eyes are sessile, and are not supported upon 

 stalks. 



E-las-mo-bbanoh'i-i (Gr. elasma, a plate; bragcMa, gUls). An order of 

 Fishes, including the Sharks and Eays. 



El'y-tea (Gr. elutron, a sheath). The chitinous anterior pair of wings in 

 Beetles, which form cases for the posterior membranous wings. Also ap- 

 plied to the scales or plates on the back of the Sea-mouse (Jphrodite). 



Em'bby-o (Gr. en, in; Inio, I swell). The earliest stage at which the young 

 animal is recognizable in the impregnated ovum. 



En-oeph'a-lon (Gr. effkep/talos, brain). The portion of the cerebro-spinal 

 nervous axis contained within the cranium. 



Eu-OEPn'A-LOrs (Gr. en, in ; kephale, the head). Possessing a distinct head. 

 Usually applied to all the MoUnaca proper, except the LarneUihranehiata. 



En-ots-ta'tion (Gr. en, in ; huatis, a bag). The transformation undergone by 

 certain of the Protozoa, when they become motionless, and surround them- 

 selves by a thick coating or cyst. 



En'de-eon (Gr. en, in; deroa, skin). The inner plane of growth of the outer 

 integumentary layer (viz., the ectoderm, or epidermis). 



En'do-ctst (Gr. endon, within ; iuatis, a bag). The inner membrane or in- 

 tegumentary layer of a Polyzocn. In Cristatella, where there is no " ecto- 

 cyst," the endooyst constitutes the entire integument. 



En DO-DEEM (Gr. endon ; and derma, skin). The inner integumentary layer 

 of the Codenterata. 



En-dop'o-dite (Gr. endon; and potis, foot). The inner of the two secondary 

 joints into which the typical limb of a Crustacean is divided. 



Eh'do-saeo (Gr. endon; and aarx, flesh). The inner molecular layer of sarcode 

 in the Amoeba and other allied Bhizopods. 



En-do -skel'e-ton (Gr. endon; and aheletos, dry). The internal hard stnio- 

 tures, such as bones, which serve for the attachment of muscles, or the pro- 

 tection of organs, and which are not a mere hardening of the integument. 



En'si-foem fLat. ensu, a sword; forma, shape). Sword- shaped. 



En-to-moph A-GA (Gr. entoma, insects ; pliago, I eat). A section of the Mar- 

 supialia. 



En-to-mos'tea-ka (Gs. eiitoma, insects ; ostraleon, a shell). Literally, shelled 

 insects — applied to a division of Crustacea. 



En-to-zo'a (Gr. entos, within ; zoon, animal). Animals which are parasitic in 

 the interior of other animals. 



E'o-CENE (Gr. eoa, dawn ; kainoa^ new or recent). The lowest division of the 

 Tertiary rocks, in which species of existing shells are to a email extent 

 represented. 



