GLOSSARY 



231 



Occip'ital condyle, 199. 



Olfac'tory. Pertaining to the 

 organs of smell. 



Op'tic. Pertaining to the organs 

 or nerves of sight. 



Os'cines. The group of birds 

 that sing. 



Orthop'tera, (Gr. Straight 

 Wings). An order of insects 

 which have straight outer 

 wings. 



O'viduct, 33. 



Ovipos'itor. An organ compos- 

 ed of several specialized parts 

 of the abdomen with which 

 many insects place their eggs. 



Pal'lial, 140. 



Papil'lae, 164. 



Paraglos'sae, 55. 



Pata'gia, 46. 



Pec'tinate. • Shaped like a comb, 

 with toothed edges. 



Pe'dal. Pertaining to the foot. 



Ped'icel, 65. 



Pelag'ic. Living in the sur- 

 face waters of the ocean. 



Pericardial. Situated around 

 the heart. 



Peritone'um, 153. 



Phar'ynx, 165. 



Pia mater, 171. 



Pig'ment cells. Cells that give 

 coloring to the animals. 



Pi'neal gland. A glandlike body 

 in the brain of vertebrate ani- 

 mals. It is sometimes con- 



nected with a rudimentary eye 

 called the pineal eye. 



Placen'ta. The vascular appen- 

 dage connecting the young to 

 the parent before birth. 



Plas'ma, 169. 



Pleu'ral. Relating to the pleu- 

 rum, 23. 



Plex'us. A network of vessels, 

 nerves or fibers. 



Plumose'. Feathery. 



Porrect'ed. Extended horizon- 

 tally. 



Preda'ceous. Living by prey. 



Pri'maries. The long feathers 

 on the last joint of the bird's 

 wing. 



Probos'cis. In insects a hollow 

 sucking organ usually made by 

 the combining of several mouth 

 parts. 



Prono'tum, 23. 



Proster'num. The first division 

 of the sternum of the thorax 

 of insects. 



Protrus'ile. Capable of being 

 protruded or thrust out. 



Pulvil'li, 75. 



Pu'pa, 42. 



Pygid'ium. The tail plate of 

 crustaceans and insects. 



Pylo'ric caeca, 154. 



Quad'rate bone. The small bone 

 between the lower jaw and 

 the base of the skull in most 

 vertebrates below mammals. 



