GLOSSARY. 43 



Eminen'tia collatera'lis (L. collateral eminence). A small 



smooth eminence in the cerebral hemispheres between the 



hippocampi major and minor. 

 Eminen'tia papilla'ris (L. papillary eminence). A small conical 



eminence behind the fenestra ovalis of the human ear. 

 Eminen'tia pyramida'lis (L. pyramidal eminence). A vertical 



ridge in the vestibule of the human ear, also termed 



crista vestibuli. 

 Eminen'tia ter'es (L. rounded eminence). A small eminence 



in the medulla oblongata. 

 Emunc'tory (L. emungo, I wipe). Any part by which waste 



matter is got rid of. 

 Emy'dea (Gr. emus, a fresh-water tortoise). A group of the 



Chelonia which comprises the river and marsh tortoises. 

 Enarthro'dia (Gr. en, in ; arthron, a joint). A ball and socket 



joint, allowing motion in every direction. 

 Encg'phalon (Gr. en, in ; kephale, the head). The brain, 



including the medulla oblongata. 

 Encys'ted (Gr. en, in; kustis, a bladder). Enclosed in a sac. 



A condition of some of the Protozoa, in which they 



become motionless, and invest themselves with a cyst. 

 Endocar'dium (Gr. endon, within; kardia, the heart). The 



lining membrane of the heart. 

 Endocho'rion (Gr. endon, within ; chorion, skin). The vascular 



layer of the allantois. 

 En'docyst (Gr. endon, within; kustis, a bladder). The inner 



layer of the cell in the Polyzoa. 



En'doderm (Gr. endon, within; derma, skin). The inner body- 

 wall of some invertebrate animals, developed from the 



hypoblast. 

 Endogenous (Gr. endon, within ; gennao, I produce). Applied 



to those plants which grow by the addition of new 

 . material internally. 

 Endogna'thal palp (Gr. endon, within; gnathos, a jaw). A 



modification of the three terminal joints of the third 



thoracic appendage in the Brachyurous Crustaceans. 

 En'dolymph (Gr. endon, within ; L. lympha, water). The 



watery fluid in the membranous labyrinth of the ear. 

 Endolymphan'gial no'dules (Gr. endon, within ; L. lympha, 



water). Nodules occurring in the serous membranes, and 



containing lymph corpuscles. 

 Endophlce'um (Gr. endon, within ; phloios, bark). The inner 



bark or liber of a tree. 



