100 GLOSSARY. 



Paraple'gia (Gr. a numbing of parts). Paralysis in which 

 either the upper or lower half of the body is affected. 



Parapo'dia (Gr. para, beside; potts, podos, a foot). Rudimen- 

 tary limbs developed in the higher Eolychzeta by each 

 segment of the body. 



ParapS'physis (Gr. para, beside; apophuo,\ sprout). The 

 name given to the inferior transverse process of a vertebra, 

 when two are present on each side of the centrum. 



Parasphe'noid (Gr.para, beside ; sphen, a wedge ; eidos, shape). 

 A bone which in some Vertebrata underlies the base of 

 the skull from the basi-occipital to the presphenoidal 

 region. 



Parax'ial muscles (Gr. para, near, beside). That portion of 

 the muscles of the trunk which lies near the axis of the 

 body. 



Paren'chyma (Gr. para, together ; encheo, to pour in). The 

 cellular tissue of plants; also applied to the general cellu- 

 lar substance of glands. 



Pari'es (L. a wall). The free triangular middle portion of each 

 piece of the shell in the Cirripedia. 



Pari'etal (L./wf2r,/0/fetfr,awall). A name given to a pair of 

 bones which form the middle part of the roof of the skull ; 

 also applied to those layers of the serous membranes which 

 line the walls of the cavities in which they are placed. 



Pari'eto-mas'toid su'ture. The articulation of the parietal bone 

 of the skull with the mastoid portion of the temporal 

 bone. 



Pari'eto-splan'chnic (L. paries, a wall ; Gr. splanchna, the in- 

 ternal organs). A name given to a nerve ganglion, which 

 in some Mollusca supplies nerve fibres to the mantle, gills, 

 and internal organs. 



Paro'tid (Gr. para, beside ; otis, otos, the ear). The name 

 given to a pair of salivary glands, situated one beside each 

 ear. 



Parova'rimn (Gr. para, near ; L. marium, ovary). A group of 



tubules lying between the Fallopian tube and the ovary. 

 Pars cilia'ris retinae (L. ciliary part of the retina). A thin 

 layer of cells continued from the ora serrata of the retina 

 to the ciliary processes. 

 Parthenog^'nesis (Gr. partlicnos, a virgin; genesis, birth). 



Reproduction by means of an unimpregnated germ. 

 Parturi'tion (L. parturio, I bring forth, bear). The process of 

 bringing forth young ; birth. 



