PSE- 



263 



FFE- 



investing envelope of certain Liver- 

 worts (bot.). 



pseudoperidium (su'dope'rld'ium, psu-) 

 n. [Gk. pseudes, false ; peridion, 

 small wallet.] The aeciospore en- 

 velope of certain Fungi (hot.). 



pseudoplasmodium (su'ddplazmo'- 

 dlum, psu-) n. [Gk. pseudes, false ; 

 plasma, form.] An aggregation of 

 amoebulae without fusion of their 

 protoplasmic bodies (zool}. 



pseudopodiospore (sudopo'diospor, 

 psu-) n. [Gk. pseudes, false ; pous, 

 foot ; sporos, seed.] An amoebula 

 or amoeboid swarm-spore which 

 moves by means of pseudopodia 

 (zool.). 



pseudopodium (su'dopS'dlum, psu-) n. 

 [Gk. pseudes, false ; pous, foot.] A 

 blunt protrusion of ectoplasm serv- 

 ing for locomotion and prehension 

 in Protozoa (zool.) ; in certain 

 Mosses, the sporogonium-supporting 

 pedicel (bot.). 



pseudopore (su'dopor, psu-) n. [Gk. 

 pseudes, false ; poros, channel.] A 

 small orifice between outermost 

 tube and intercanal system of cer- 

 tain Sponges (zool.). 



pseudopupa (su'dopu'pS, psu-) n. [Gk. 

 pseudes, false ; L. pupa, puppet.] 

 The semi-pupa or coarctate stage 

 of certain insect larvae (zool.). 



pseudoramose (su'dora'mos, psu-) a. 

 [Gk. pseudes, false ; L. ramus, 

 branch.] Having false branches 

 (dot.}. 



pseudoramulus (su'dor&m'ulus, psu-) n. 

 [Gk. pseudes, false ; L. ramulus, 

 small branch.] A spurious branch 

 of certain Algae (bot.}. 



pseudo-reduction, the preliminary 

 division of chromatin-rods preced- 

 ing the formation of tetrads and 

 the actual reduction in maturation 

 (cyt.). 



pseudorhabdltes (su'dor&b'dlts, psu-) 

 n.plu. [Gk. pseudes, false ; rhabdos, 

 rod.] Granular masses of formed 

 secretion produced by gland-cells 

 of Rhabdocoelida (zool.). 



pseudoscolex (su'dosk5'16ks, psu-) n. 

 [Gk. pseudss, false ; skolex, worm.] 

 Modified anterior proglottides of 

 certain Cestoids where the true 

 scolex is absent (zool.). 

 pseudoseptate (su'dosSp'tat, psu-) a. 



S3k. pseudes, false ; L. septum, 

 ivision.] Apparently, but not 

 morphologically, septate (bot.).' 



pseudosessile (su'dosSs'il, psu-) a. 

 [Gk. pseudes, false ; L. sedere, to sit.] 

 Appl. the abdomen of petiolate 

 Insects when the petiole is so short 

 that the abdomen is close to the 

 thorax ; cf. pedicellate (zool.). 



pseudosperm (su'ddspgrm, psu-) n. 

 [Gk. pseudes, false ; sperma, seed.] 

 A false seed or carpel (bot.). 



pseudospore (su'dospor, psu-) n. [Gk. 

 pseudes, false ; sporos, seed.] A 

 teliospore or winter-spore of certain 

 Rusts (bot.). 



pseudostoma (su'dosto'ma, psu-) n. 

 [Gk. pseudes, false ; stoma, mouth.] 

 A temporary mouth ; a mouth-like 

 opening ; a pseudoosculum (zool.). 



pseudovarium (su'dova'rlum, psu-) n. 

 [Gk. pseudes^ false ; L. ovarium, 

 ovary.] An ovary producing pseu- 

 dova (zool.). 



pseudovitellus (su'ddvttgl'us, psu-) n. 

 [Gk. Pseudes) false ; L. -vitellus, egg- 

 yolk.] A cellular double-string 

 structure of Aphidae, a supposed 

 substitute for absent Malpighian 

 tubes (zool.). 



pseudovum (sudo'vum, psu-) n. [Gk. 

 pseudes, false ; L. ovum, egg.] An 

 ovum that can develop without 

 fertilization ; a parthenogenetic 

 ovum ; the earlier condition of the 

 viviparously - produced Aphidae 

 (zool.). 



pseudozoaea (su'dozo'eS, psu-) n. [Gk. 

 pseudes, false ; zoon, animal.] A 

 larval stage of Stomatopods, so- 

 called from its resemblance to the 

 zoaea stage of Decapods (zool.). 



psoas (so'as, pso-) n. [Gk. psoa, 

 loins.] Name of two loin muscles 

 (anati). 



psorosperms (so'rpspSrmz, pso-) n. 

 plu. \Gk.psora, itch ; sperma, seed.] , 

 Sporozoa ; parasitic organisms 

 generally (biol.). 



pteridology (teYldSl'bjf, pteY-) n. [Gk. 

 pteris, fern ; logos, discourse.] The 

 branch of Botany dealing with ferns. 



pteridophyte (teYldoflt, pt6r-) n. 

 [Gk. pteris, fern ; phyton, plant.] 

 A plant of the fern group (bot.). 



pterion (teVl6n, ptfir-) n. [Gk. pteron, 

 wing.] The point of junction of. 



