'']SS GLOSSARY. 



0-vo-vi-vip'a-rous (Lat. ovum, efjg ; vioufi^ alive; ^.'ctW;:', I pro luce). Ap- 

 plied to animals which retuia their eggs within the body uutii they ure 

 hatched. 



O'vuM (Lat. for an Q^%'). The germ produced within the ovary, and capable 

 under certain condiitions of being developed into a new individual. 



Pach-y-der'ma-ta (Gr. pachun^ thick ; chivma., skin). An old Mammalian 

 order constituted by Cuvier for thu reception of the Rhinoceros, Hippopota- 

 mu3, Elephant, etc. 



Pa-l^-on-tol'o-gt (Gr.^fl7rt/o5, ancient ; M^/a, beings ; and /of/os, discourse). 

 The science of fossil remains or of extiui-t ori^anized beings. 



Pa-l.e-o-zo'ic ( Gr. paLaios, ancient ; and zo ■, life ). Applied to the oldest of 

 the great geological epochs. 



Pal'li-al. 



l*AL-Li-o-3R.vN--cni-A'TA (L'dt. palltum ; and Gr. hrage^ii-a, gills). An old name 

 for the Brachiopoda^ founded upon the belief that the sj'fjtem of tubes in 

 the mantle constituted the gills. 



PiL'Li-irar (Lat. palliu-m^ a cloak). The mantle of ih.^ Moll u sea. Pallial : 

 relating to the mantle. Pallial line or impression : the line left in the dead 

 shell by the muscular raargui of tlic mantle. Pallial shell : a shell which 

 is secreted by, or contained within, the mantle, such as the " bone" of the 

 Cuttle-hshes. 



Pal'pi (LaX. palpo^ I touch). Processes supposed to be organs of touch, de- 

 veloped from certain of the oral appendages in Insects, Spiders, and Crus- 

 tacea, and from the sides of the mouth in the Acephalous Molluscs. 



Pa-pil'la (Lat. for nipple). A minute soft prominence. 



Par-a-po'di-a (Gr. para^ beside ; podes^ feet). The unarticulated lateral loco- 

 motive processes or "foot-tubercles" of many of the Aniicli>la. 



Pa-ri'e-tal (IjhX^. paries, a wall). Connected with the walls of a cavity or of 

 the body. 



Pa-ri-e-to-splanch'nto (Lat. paries; Gr. fiplafjchn.a, viscera"). Applied to 

 one of the nervous ganglia ot the Molliisca, which supplies tlie walls of the 

 body and the viscera. 



Par-then-o-gen'e-sis (Gr. partJienos, a virgin ; and genesis, production). 

 Strictly speaking, confined to the production of new individuals from virgin 

 females by means of ova without the intervention of a male. SornetimiiS 

 used also to designate a sexual reproduction by gemmation or fission. 



Pat-a-gi'um (Lat. lor the border of a dress). Applied to the expansion of the 

 integument by which Bats, Flying Squirrels, and other annnals support 

 themselves in the air. 



Pa-^el'la (Lat. for tlie knee-cap or knee-pan). A sesamoid bone devel- 

 oped in the tendon of insertion of the great extensor muscles of the thigh. 



Pec'ti-nate (Lat. pecte/i, a comb). Comb-like; apphed to the gills of ccitaiu 

 Gasteropods, hence called Pe,:tliiihra>ichiata. 



Pec'to-ral (Lat. pectus, chest). Connected with, or placed upon, the chest. 



Pe'dal (Lat. pes, the foot). Connected with the foot of Mollu.'ica. 



pED-i-GEL-LA Bi-^ (Lat. pedicellus, a louse). Certain singular appendages 

 found in many Eckinodernis, attached to the surface of the body, aud le- 

 sembling a little beak or tbreeps supported on a stalk. 



Ped'i-cle (Lat. dimin. oipes, the foot). A little stem. 



Ped-i-pal'pi (Lat, /?es,_toot; vca^. palpo, I feel). An order of Srachnida 

 eomprising the Scorpions, etc. 



Pe-dux'ole {hixt. pedunculm, a stem or stalk). In a rustrieted sense applied 

 to tlie muscular process by which certain Brackiopods arc attached, and to 

 the stem which bears the body (capitidum) in Barnacles. 



Pe-dun'cu-late. Possessing a peduncle. 



Pe-DUn'cU- LA-TED. 



I'e-lag'io (Gr. pelarjos^ sea). Ldiabiting the open ocean. 



Pel'vis (Lat. for basin). Applied, from analogy, to the basal portion of the 



cup (cali/.c) nf C'riaoids. The body arch with whicit the Iun<-l-limbs are 



coimected iu Vertebrates. 



