viii CONTENTS 



CHAPTER XVII 



PAGE 



NEUROPTERA CONTINUED PSOCIDAE (BooK-LiCE AND DEATH-WATCHES) THE 



FIRST FAMILY OF AMPHIBIOUS NEUROPTERA (PERLIDAE, STONE-FLIES) . 390 



CHAPTER XVIII 



AMPHIBIOUS NEUROPTERA CONTINUED ODONATA, DRAGON-FLIES . . 409 



CHAPTER XIX 



AMPHIBIOUS NEUROPTERA CONTINUED EPHEMERIDAE, MAY-FLIES . . 429 



CHAPTER XX 



NEUROPTERA PLANIPENNIA SIALIDAE, ALDER-FLIES, SNAKE-FLIES PANOR- 



PIDAE, SCORPION-FLIES HEMEROBIIDAB, ANT-LIONS, LACEWINGS, ETC. 444 



CHAPTER XXI 



NEUROPTERA CONTINUED TRICIIOPTERA, THE PHRYGANEIDAE OR CADDIS- 

 FLIES 473 



CHAPTER XXII 



HYMENOPTERA HYMENOPTERA SESSILIVENTRES CEPHIDAE ORYSSIDAE 



SIRICIDAE TENTHREDINIDAE OR SAWFLIES 487 



CHAPTER XXlil 



HYMENOPTERA PETIOLATA PARASITIC HYMENOPTERA CYNIPIDAE OR GALL- 

 FLIES PROCTOTRYPIDAE CHALCIDIDAE ICHNEUMONIDAE BRACON- 

 IDAE STEPHANIDAE MEGALYRIDAE EVANIIDAE PELECINIDAE 

 TRIGONALIDAE 519 



INDEX , 567 



