viii CONTENTS 



CHAPTER XVII 



PAGE 

 l^EUROPTERA CONTINUED PSOCIDAE (BoOK-LlCE 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 Hemerobiidae, Ant-Lions, Lacewings, etc. 444 



CHAPTER XXI 



Neuroptera continued Trichoptera, the Phryganeidae or Caddis- 

 Flies . . 473 



CHAPTER XXII 



Hymenoptera Hymenoptera Sessiliven'ires Cephidae Oryssidae 



SiRiciDAE Tenthredinidae OR Sawflies 487 



CHAPTER XXIII 



Hymenoptera Petiolata Parasitic Hymenoptera Cynipidae or Gall- 

 flies Proctotrypid AE Chalcididae Ichneumonidae Bracon- 

 iDAE Stephanidae Mecalyridae Evaniidae Pelkcinidae 

 Trigonalidae 519 



Index 567 



