378 GLOSSARY. 



Ep-t-der'mis (Gr. epi^ upon ; derma^ the true skin). The outer non-vascular 



layer of the skin, often called the scarf-dkin or cuticle. 

 £p-i-me'ra (Gr. epi^ upon; m'eroii^ thigh). The lateral pieces of the dorsal 



arc of the somite of a Crustacean. 

 Ep-i-po'di-a (Gr. ^joi, upon ; pous^ the foot). Muscular lobes developed from 



the lateral and upper surfaces of the "foot" of some Molluscs. 

 E-Pip'o-DiTE (Gr. epi^ upon ; poiLS^ foot). A process developed upon the basal 



joint, or " pmrojiodite," ot some of the limbs of certain Crustacea. 

 Ep-1-steb'na (Gr. cpi., upon; ster/ion, the breast-bone). The lateral pieces 



of the inferior or ventral arc of the somite of a Crustacean. 

 Ep'i-stome (Gr. epl/ and stojna, mouth). A valve-like organ which arches 



over the mouth in certain of the Polyzoa. 

 Ep-i-the'ca (Gr. rpi ; and tlieke.^ a sheath). A continuous layer surrounding 



the thecie in some Corals, and being the external indications of tabuhie. 

 Kp-i-zo'a (Gr. e/>'i, upon ; zo'im^ animal I. Animals which are parasitic upon 



other animals. In a restricted sen^ie, a division of Crustacea which are 



parasitic upon fishes. 

 E-qui-lat'ek-al (Lat. cequvs^ equal; latus^ side). Having its sides equal. 



Usually applied to the shells of the Bruchiopoda. When applied to the 



spiral shells of the Foraminifera^ it means that ail the convolutions of the 



shell lie in the same plane. 

 E'qut-valve (Lat. mquus^ equal; valvm, folding-doors). Applied to sliells 



which are composed of two equal pieces or valves, 

 Er-ran'ti-a (Lat. erro^ I wander). An order of An'ulida, often called i^ereidea^ 



distinguished by their great locomotive powers. 

 Eu-rvp-tee'i-da (Gr. eurus, broad ; pteron, wing). An extinct sub-order of 



Cnistacta, 

 Ex-op'o-DiTE (Gr. e-^o, Oatsicle ; pous, foot). The outer of the two secondary 



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

 Ex-o-skel'e-ton (Gr. ca'-o, outside ; skehtos^ (iry). The external skeleton, 



which is constituted by a hardening of the integument, and is often called 



a '' dermoskeleton." 



Fas-cic'u-la-ted (h&i. faficiviilus^ a bundle). Arranged in bundles. 



Eau'na (Lat. Fau/ii^ the rural deities of the Romans). The general assem- 

 blage of the animals of any region or district. 



Fe'miir. The thigh-bone, intervening between the pelvis and the bones of 

 the leg proper {tibia nud^/ibula). 



Fib'u-la (Lat. a brooch). Tlie outermost of the two bones of the leg in the 

 higljur Vertehrata ; corresponding to the ulna of the fore-arm. 



Fil'i-form (Lat. Jilum^ a thread ;y(:)/'mcr, shape). Thread-shaped. 



Eis-si-lin'oti-a i'Liit. ^/indo^ I cleave; lingua^ tonguej. A division of Zacer- 

 titia, with bitid tongues. 



Fjs'sion (Lat. Ji/ido, 1 cleave). Multiplication b\' means of a process of self- 

 division. 



Fis-sjp'a-rocs (Lat. Jindo ; and pario, I produce). Giving origin to fresh 

 structures by a process of lission. 



Fis-si-ros'tres (Lat. Jindo, I cleave; rostrum^ beak). A 'sub-order of the 

 Perchln.s; Birds. 



Fla-gkl'ltm (Lat. for whip). The lash-like appendage exhibited by many 

 Infusoria^ whicli arc therefore said to be "flagellate." 



Flo' HA (Lat. Flora^ the goddess of flowers). Tlie general assemblage of the 

 plants of any region or district. 



F(.>OT. 



FooT-JAWs. The limbs of Crustacea, which arc modified to subserve mastica- 

 tion. 



Foot-se-cre'tion. The tenn applied by Mr. Dana to the solerobasic coralluin 

 of certain Actinozoa. 



Foot-to'ber-cles. The unarticulated appendages of the Annelida, ofter 



called parapodia. 



'O-KAAI-I-NIF E-RA (Lat./'. 



Fo-KAAi-i-NiF E-RA {L\x\.. forameii, im aperture ; /^ro, I carry). An order of 



