165 Phy 



Petiolus. — The footstalk ; a slender part by which 

 the abdomen of many Hymenoptera is united 

 to the trunk ; it includes the funiculus, and 

 foramen. (L.) 



Phallus. — The male organ of generation. (Gr. 

 2)hallos.) 



Pharyngeal nerve. — Two small nerves arising from 

 each side of the frontal ganglion, extending 

 latero-ventrally to the lower portions of the 

 pharynx. (Hammar.) (From Gr. pharunyx, 

 the pharynx.) 



Pharyngeal pump. — The antlia. 



Pharynx. — The opening into the gullet ; it includes 

 the epipharynx and hypopharynx. (L. from 

 Gr. pharungx.) 



Phial. — -A little sac to receive fluid at the will of 

 the insect, by which the weight of the wing 

 is increased. (Gr. phiale, a small vessel, or 

 bottle.) 



Phosphorescent. — Lucid ; emitting light in the 

 dark. (From L. phosphorus.) 



Phragma. — The posterior margin of the prothorax 

 descending in front of the alitrunk. (Gr, an 

 enclosure.) 



Phylogenetic. — Pertaining to the history of the 

 race. (Gr. phnle, a tribe, and gennao, to bring 

 forth.) 



Phytophagus.— Feeding on plants. (Gr. phyton, 

 a plant and phago, to eat.) 



