GLOSSARY. 391 



Po]>T-zo-A'iii-ust. The derm.il system of the co\ony of a. Foli/zodn (= Polypi- 

 dom). 



Por-cel-la'ne-ou9. Of the texture of porcelain. 



Po-rif'e-ra (Lut. porus^ a pore ; aad/tro, I carry. Sometimes used to desig- 

 nate the Foraininifera^ or the Spoii'jes. 



Fost'a-nal (Lat. _^jo6';!, behind; anas^ the fundament). Situated behind the 

 anus. 



Post-ce-so-phao'e-al (Gr. oisopliagos^ the gullet). Situated behind the gullet. 



Post-o'ral (Lat. os, mouth). Situated behind the mouth. 



pR^-MAx-iL L.E. {See Intermaxillfe. ) 



Pit-E-Mo'LAK9 (Lat. jO/'iE, before ; molares^ the grinders). The molar teeth of 

 Mammals which succeed the molars of the milk-set of teeth. In man, the 

 bicuspid teeth. 



Pr/E-<e-so-phag'e-al. Situated in front of the gullet. 



Pr-E-ster'j^um (Gr. sternoii, the breast). The anterior portion of the breast- 

 bone, corresponding with the manuhrium sterni of human anatomy, and 

 extending as far as the point of articulation of the second rib. 



Pres-si-ros TEES (Lat. _p/^*ei(i'«s, compressed; rostrum^ beak). A group of the 

 Grallatorial Birds. 



Pkoe-os-cid'e-a (Lat. prol) scis^ the snout). The order of Alammals com- 

 prising the Elephants. 



Pko-bos GTS (Lat. orGr. for the snout). Applied to the spiral trunk of Z^jjii/oj?- 

 terous Insects^ to the projecting mouth of certain Cniiolds^ and to the cen- 

 tral polypite in the Medasoi. 



FKo-ctE'L0U9 {(jiY. pro^ iu frout ; Tcoilos^ hollow). Applied to vertebra}, the 

 bodies of which are hollow or concave in front. 



Pro-glot'tis ( Gr. for the tip of the tongue). The generative segment or joint 

 of a Tape-worm. 



Pro'legs. The false abdominal feet of Cateriiillars. 



Pko-n'a'tion {J^ixt. pronus^ lyii^o ^^ "^^^ face, prone}. The act of turning the 

 palm of the hand downward. 



Pro-po'di-um (Gr. pro^ before ; pous^ foot). The anterior part of the foot in 

 Molluscs. 



Pro-sco'lex (Gr. pjro^ before ; scolex, worm). The first embryonic stage of a 

 Tape-worm. 



Pros-o-bran-chi-a'ta (Gr. pi'oso^ in advance of; bragcMa, gills). A division 

 of Gasteropodous Molluscs in which the gills are slcuated in advance of the 

 heart. 



Pro-so'ma (Gi". pro^ before ; soma^ body). The anterior part of the body. 



Pro-tho'rax i,Gr. pi-o ; and thoi'a.c, ciiest). The anterior ring of the thorax 

 of insects. 



Pro-toph't-ta (Gr. protos^ firat ; tmdp/mion^ plant). The lowest division of 

 plants. 



Pro'to-plasji (Gr. ^;'oi^f)«; and plasso, I mould). The elementary basis of 

 organized tissues. Sometimes used synonymously for the ''sarcodc" of 

 the Protozoa. 



Pro-top' o-DiTE {Gr. protos ; and pous^ foot). The basal segment of the typi- 

 cal limb of a Crustacsan. 



Pro-to-zo'a (Gv. protos / and zo'n^ animal). The lowest division of the ani- 

 mal kingdom. 



Pro-ves-tric'u-lus (Lat. pro, in front of; 'ventriculus^ dim. of venter^ belly). 

 The cardiac portion of the stomach of Birds. 



Prox'i-mal (Lat. froximus, next). The slowly-growing, comparatively -fixed 

 extremity of a limb or of an organism. 



Psal-te'ri-um (Lat. for a stringed instrument). The third stomach of llu- 

 rainants. {See Omasum. ) 



Pseu-dem'ery-o (Gr. ptseudes, false; emhruon^ embryo . The larval form of 

 an Echinoderm. 



Pbeu-do-bran'c[I[-a (Gr. pseudes^ false ; bragchia, gills). A supplementary gill 

 found in certain fishes, which receives' arterialiiied blood only, and doea 

 not, therefore, assist in respiration. 



