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GLOSSARY. 



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, fluke- worm., 

 etc. 



PA-TA'GI-TJM (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-ITM. The border of 

 the mouth, or oral margin, in 

 Diptera. 



PER-I-TREME'. The piece en- 

 closing the spiracle. 



PEK-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. 



PHA-RYN'GE-AL. Relating to the 

 pharynx. 



PHAR'YNX (Gr. pharugx). 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. pliusa, bel- 



lows; pous, 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. 



PI'LOSE. Clothed with pile, or 

 dense short down. 



PLAN'TA. Strictly the sole or 

 under side of the foot; accord- 

 ing to Cheshire, the tirst tarsal 

 joint of bees. 



PLANT'U-LA. One of the soles or 

 climbing cushions of the foot; 

 also one lobe of the divided 

 pulvillus. 



PLA-TYP'TE-RA (Gr. plat us, flat; 

 pteron, wine). The order of in- 

 sects represented by the bird- 

 lice, white ants, Psocida; and 

 Perlidae. 



PLEU'RTJM. The side of the tho- 

 rax; pleurites, the pieces into 

 which the pleurum is divided. 



PLEX'US (Lat. a knot). Applied 

 to a knot-like mass of nerves 

 or blood-vessels. 



POD'I-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. 



