GLOSSARY 317 



Papilla (pi. papillae) : a small nipple-like process, as the papillae of the 

 skin or tongue. 



Parasite : 93. 



Parthenogenesis: 35. 



Pelag'ic : inhabiting the surface of mid-ocean. 160. 



Fhar ynx : 42. 



Physiology: 39. 



Plat yrrhine : broad-nosed ; said of the New-World monkeys. 



Pluteus: 59. 



Polyg'amous : said of animals in which a single male mates with sev- 

 eral females : 35. 



PSlymor phism : 24. 



Polyp: 21. 



Post-embryonic : 49 



Praecd cial (pre-co'-shal) : 79. 



Predatory: feeding on other animals. 



Propolis: 84. 



Protective resemblance : 107. 



Pr5 toplasm : 2. 



Proventric'ulus : 42. 



Pseu'dopod : 4. 



Psy'chic : 140. 



Pupa: 57. 



Reason: 139. 



Recognition mark : 77, 115. 



Rectum: 42. 



Reflex action : 127. 



Reproduction : 67. 



Respiration: 4. 



Retic ulum : 42. 



Retina: 123. 



Ru men : 42. 



Ru min ant : 42. 



Saliva: 42. 



Sensation : 67. 



Sensorium : 126. 



Sil'ica : the mineral of which quartz, sand, flint, etc., are composed. 



Spawn, v. : to lay eggs. 



Specialization: 41. 



Species : 151. 



