GLOSSARY. 645 



Pol-y-zo-a'ki-tim. The dermal system of the colony of aili?ys35» (= Polypi- 

 dom). 



PoE-oEL-Li'NE-otjg. Of the texture of poroelain. 



Po-eie'e-ka (Lat. porua, a pore ; nad/ero, I carry. Sometimes used to dosi^ 

 nate the Jiorammi/era, or the Sponges. 



Post'a-nal (Lat. post, behind ; anus, the fundament). Situated hehiad the 

 anus. 



Po3T-(E-so-PHAa'E-AL (Gr. oisopliagos, the gullet). Situated behind the guUet. 



Post-o'eal fLat. os, mouth). Situated behind the mouth. 



Pe^-max-ill^. (jSe« Intermaxillse.) 



Pe.e-mo'laes (Lat. prae, before ; molares, the grinders). The molar teeth of 

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

 bicuspid teeth. 



Pe«-<e-so-phag'e-ai.. Situated in front of the gullet. 



Pe^-stek'nom" (Ur. sternon, the breast). The anterior portion of the breast- 

 bone, corresponding with the maTmiriiMn sterrd of numan anatomy, and 

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



Pees-si-eos TEES (h&t. pressus, compressed; rostrum, beak). A group of the 

 Grallatorial Birds. 



Peob-os-oid'e-a (Lat. proboscis, the snout). The order of Mammals com- 

 prising the Elephants. 



Peo-bos ois (Lat. or Gr. for the snout). Applied to the spiral trunk of Lepidop- 

 terous Insects, to the projecting mouth of certain Gnnoids, and to the cen- 

 tral polypite in the Medwsce. 



PEO-offi'Lons (Gr. pro, in front ; Tcoilos, hollow). Applied to vertebrae, the 

 bodies of which are hollow or concave in front. 



Pko-olot'tis (Gr. for the tipof the tongue). The generative segment or joint 

 of a Tape-worm. 



Peo'legs. The false abdominal feet of Caterpillars. 



Pko-na'tion (Lat. promis, lying on the face, prone). The act of turning the 

 palm of the hand downward. 



Pko-po'di-Cm (Gr. pro, before; pons, foot). The anterior' part of the foot in 

 Molluscs. 



Peo-soo'lex (Gr. pro, before ; soolex, worm). The first embryonic stage of a 

 Tape-worm. , ,. . . 



Pkos-o-bean-ohi-a'ta (Gr. proso, in advance of; iraifoma, gills). A division 

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

 heart. 



Pbo-so'ma (Gr. pro, before; soma, body). The anterior part of the bodv. 



Peo-tho'bax ^Gr. pro; and tJtorax, chest). The anterior ring of the thorax 

 of insects. . „,,,...„ 



Pko-toph' Y-TA (Gr. protos, first ; and^A««o», plant). The lowest division ot 



Pbo'to-plasm {Gr. protos; and plasso, I mould). The elementary basis of 

 organized tissues. Sometimes use'd synonymously for the "saroode" of 



\ha Protozoa. ,.,„,,, -, .. ^ .., ^ • 



Pbo-top'o-dite (Gr, protos; and pous, foot). The basal segment of the ij^i- 



oaWivabota, Orustaeean. .,,„,■, .,- •■ m. 



Peo-to-zo'a (Gr. protos; and zoCn, animal). The lowest division of the ani- 



Peo-veh^eio'u-ltjs (Lat. pro, in front of: mntriculus, dim. of venter, belly). ■ 

 The cardiac portion of the stomach of Birds. ■ _ ... , a' j 



Pbox'i-mal (Lat. proximus, next). The slowly-growing, comparatively-tixed 

 extremity of a hmb or of an organism. m, x, . j ^ t. «• ij,, 



Psal^e'bi-um (Lat, for a stringed instrument). The third stomach ol liu- 

 minants. (See Omasum.} , mi ■. 1 j. c 



Psbu-dbm'bey-o (Gr. pseudes, false ; embruon, embryo). The larval form ot 



Psm-do-be1nWa (Gr. pse-udes, false ; 6mj7<!«a,.gills), A supplementary gill 

 found in certain fishes, which receives artenalized blood only, and aoes 

 not, therefore, assist ia z'espiration. 



