696 



GLOSSARY. 



Those Ungulates with an un- 

 even number of toes, as the 

 horse. 



Pe-eito-ne rM(Gr.pm, around; 

 teino, I stretch). The mem- 

 brane liniDg the abdominal 

 walls and covering the enclosed 

 viscera. 



Per-i-tis CE-R.VL (Gr. peri, 

 around; Lat. imcera, the inter- 

 nal organs, especially of the 

 abdominal cavity). The body- 

 cavity containing the alimen- 

 tary canal with its outgrowths. 



Pha-kyn ge-al. Relating to the 

 pharynx. 



Pht-log'e-xt (Gr. phuUm, stem ; 

 gene, birth). The development 

 by evolution of the members of 

 a genus, family, order, class, or 

 the animal kingdom as a whole. 



Pi'CE-ocs. Pitcliy; the color of 

 pitch; shiniiis: reddish black. 



Pilose. Clothed with pile, or 

 dense short down. 



Pl^js u-LA. The two -layered 

 embryo of Coelenterates. 



Pi,A-TTP TE-RA (Gr. platvs, flat ; 

 pteron). The order of insects 

 represented by the white ants. 

 Psr.ciiJae and Perlidse. 



Plex rs (Lat. a knot). Applied 

 to a knot-like mass of nerves 

 or blood-vessels. 



Pol-lex. The thumb or inner- 

 most digit of the hand or fore- 

 foot. 



Pol T-piDE or Pol't-pite. The 

 separate animals of a Hydro- 

 zoon. 



Preo-ral. In front of the 

 mouth. 



Process. A projection; used 

 chiefly in osteology. 



Pro-Cce'lous (Gr. pro, front; 

 koUoa, hollow). Those verte- 

 bra concave or hollow in front. 



Proc-to-d^ ni. The primitive 

 hind gut, or rectum, 



PHO-TOit'A-L.E. The second pair 

 of head-appendages in Myrio- 

 poda. 



Pro'to-plasm (Gr. protos, first; 

 plasma, from plasso, I mould). 

 The albuminous, elementary 

 matter forming cells and the 

 body-substance of Protozoa. 



Prox'i MAL (L.it.pr«nmM«, next). 

 The fixed end of a limb, bone, 

 or appendage; that nearest the 

 body; opposed to diiUal, the 

 farther end. 



PsEr-DO-PO Di-A (Gr. psevdes, 

 false; pedes, feet). The tem- 

 porary processes sent out from 

 the bodies of Protozoa. 



Pter-op'o-da (Gr pleron, wing; 

 pou*.podo», fool). A class of 

 pelagic mollusks. 



Pu-EEs CENT. Coated with very 

 fine hiiirs. 



Pu>"c xrRED. Marked with nu- 

 merous small impressed dots. 



Pr PA (Lat. a doll). The third 

 or usually quiescent, chrj'salis 

 stage of insects 



Pt-lorus. The valve betweec 

 the stomach and intestine. 



Rat IT.E (Lat. rati», a raft). A 

 division of birds with a keel- 

 less, raft- or punt-like sternum. 



Rhabditxs. The blade-like ele- 

 ments of the sting and oviposi- 

 tor of insects. 



Rhi-zo'po-da (Gr. raa, root; 

 pouK, podog, foot). The root- 

 footed Protozoa. 



