348 



GLOSSARY. 



thenos, 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, fluke- worm, 

 etc. 



Pa-ta'gi-um (Gr. patageion, a 

 stripe or border to a dress). 

 The shoulder tippets; loose 

 pieces of the mesothorax, on 

 each side of the mesoscutum. 



Pe-dun'cu-late. Situated on a 

 peduncle, or stalk. 



Pel'li-cle. A thin skin, i.e., 

 the subimaginal skin shed by 

 the May-fly. 



Per-is-to mi-um. The border of 

 the mouth, or oral margin, in 

 Diptera. 



Per-i-treme'. The piece en- 

 closing the spiracle. 



Per-i-vis'ce-ral. (Gr. peri, 

 around; Lat. viscera, the inter- 

 nal organs, especially of the 

 abdominal cavity). The body- 

 cavity, containing the alimen- 

 tary canal with its outgrowths. 



Pet'i-o-lat ed. Stalked. 



Pet'i-ole. A stalk. 



Pharyngeal. Relating to the 

 pharynx. 



PnARYNX (Gr. pliarugx). The 

 back part of the mouth and 

 upper part of the throat. 



Phy-log'e-ny (Gr. phulon, stem; 

 gene, birth). The development 

 by evolution of the members 

 of a genus, family, order, class, 

 or the animal kingdom as a 

 whole. 



Phy-sap'o-da (Gr. pfrusn, bel- 



lows; pons, foot). A synonym 

 of the Thysanoptera. 



Phy-toph'a-gous. Eating plants. 



Pi'ce-ous. Pitchy; the color of 

 pitch; shining reddish black. 



Pile. Hair; often hair arranged 

 somewhat in rows. 



Pi-lif'e-rous. Pilose, or bear- 

 ing hairs. 



Pilose. Clothed with pile, or 

 dense short down. 



Plan'ta. Strictly the sole or 

 under side of the foot; accord- 

 ing to Cheshire, the first tarsal 

 joint of bees. 



Plant'u-la. One of the soles or 

 climbing cushions of the foot; 

 also one lobe of the divided 

 pul villus. 



Pla-typ te-ra (Gr. platus, flat; 

 pier on, wine). The order of in- 

 sects represented by the bird- 

 lice, white ants, Psocida? and 

 Perlidse. 



Pleu'rum. The side of the tho- 

 rax; pleurites, the pieces into 

 which the pleurum is divided. 



Plex'cs (Lat. a knot). Applied 

 to a knot-like mass of nerves 

 or blood-vessels. 



Podi-cal Plates. The two 

 pieces on each side of the vent; 

 thought by Huxley to be rudi- 

 ments of an eleventh abdomi- 

 nal ring; united they form the 

 tergite of a rudimentary elev- 

 enth abdominal ring. 



Pol li -nose. Dusted over with 

 a fine powder. 



Pol-y-an dry. Where a female 

 insect mates with more than 

 one male. 



