GLOSSARY. 



349 



CE-soph'a-gtjs (Gr. oisos, a reed ; 

 phagein, to eat). The gullet. 



ON-TOG'E-NY(Gr. on, onios, being; 

 gene, birth). The development 

 from the egg, of an individual 

 animal. 



O-pbr'cu-lum (Lat. operio, to 

 cover). In fl.shes one or more 

 bones covering the gills ; in 

 Gastropod mollusks a horny 

 plate or solid limestone mass 

 closing the orifice of shells. 



O-pis-tho-cos'lous (Gr. opisthen, 

 behind ; koilos, hollow). Those 

 vertebrates with bodies hollow 

 beliind and convex in front. 



'■" KAL. Related to the mouth. 



■ *R-NiTiio-DEL'pn i-A (Gr. ornis, 

 bird ; delphus, womb). The 

 sub class of mammals and or 

 der Monotremata. 



Ok-thop'te-ha (Gr. orthos, 

 straight ; jjteron, wing). The 

 order of insects with straight 

 narrow fore-wings, as the grass- 

 hoppers. 



08-tra'co-da (Gr. ostrucodes, 

 shelled). A group of shelled 

 Crustacea. 



O'to-liths (Gr. ous, ear ; lithos, 

 stone). Small bones suspended 

 in the internal ear of fishes, or 

 concretions in the auditory 

 sacs of invertebrates. 



0-vip'arotjs (Lat. ovum, an egg; 

 pario, I bring forth). Applied 

 to animals bringing forth eggs 

 instead of living, active young. 



0-vi-POS'iTOR (Lat. ovum, an 

 egg; pom, I place). An organ 

 in insects homologous with the 

 sting, by which eggs are de- 

 posited in solid substances. 



O'vi-SAC. A sac or bag-like mem- 



brane attached to the parent, 

 and containing eggs. 

 0-vo-vi vip'a-rous (Lat. &tmm, 

 an egg; vivvs, alive; pai'io, I 

 bring forth). Applied to such 

 animals as retain their eggs in 

 the body until they are hatched. 



P^B DO gen'e-sts. Parthenoge- 

 nous development in larval in- 

 sects. 



Pal'li-um (Lat. a cloak). The 

 mantle or body-wall of mol- 

 lusks, which secretes the shell; 

 adj. pallial. 



Pa-pil'la. a minute soft projec- 

 tion. 



Pa-ren'chy-ma (Gr. paregdmma, 

 fictvixpara, en, chv.o, something 

 poui'ed in besides). Applied 

 to the proper substance of vis- 

 cera, excluding connective tis- 

 sue, blood-vessels, and other 

 accessory parts. 



Par-the-ng gen'e-sts (Gr. par- 

 ihenos, virgin; genesis, genera- 

 tion). Reproduction by direct 

 growth of germs from the egg, 

 without fertilization by male 

 germs or spermatozoa, as in the 

 aphis, gall-insects, lluke-worm, 

 etc. 



Pel'a gic. Living on the high 

 seas, away from the coast; in 

 mid-ocean. 



PER't-soJCB (Gr. peri, around; 

 soma, body). In Crinoids the 

 oral region of the cup or body. 



Peren-ni-bkan'chi-a-ta (Lat. 

 perennis, perennial; hranchia, 

 gill). Those Batrachia which re- 

 tain their gills throughout life. 



Pei{is-so dac'ty-la (Gr. perissos, 

 uneven; daktulos, finger). 



