LIST OF OBJECTS DESCRIBED xi 



PAGE 



Herb cranefly Tipula oleracea 126 



Yellow gadfly Tabanus sudeticus 126 



Common cleg Hxmatopota pluvialis 127 



Leptis scolopacea 127 



Gooseberry hoverer Syrphus ribesti 127 



Transparent hoverer Volucella pellucens . . . .127 



Drone fly Eristalis pertinax 128 



Bat-tailed maggot E. tenax . . . . . .128 



Blue flesh-fly or Bluebottle CalUphora vomitoria . .128 



House fly Musca domestica 128 



Bronze fly Gymnochxta viridis 129 



Dung fly Scatophaga stercoraria 129 



SAWFLIES AND SIRICES. (CHAPTER VII.) 



Perineura solitaria 133 



Dolerus pratensis . .134 



Taxonus equiseti .134 



Nematus septentrionalis 134 



Nematus ribesii (Gooseberry sawfly) . . . . .134 



Cimbex femorata 135 



AUafasdata 135 



Sirex gigas (Giant sirex) 136 



S.juvencus (Pine sirex) 136 



BEES. (CHAPTER VII.) 



Bombus terrestris 137 



B.horforum 138 



B.latreilldlus 138 



B.lapidarius 138 



B. lapponicus 139 



B.pratorum 139 



B. agrorum 139 



B.venustus 139 



B. smithianus 140 



Psithyrus rupestris 140 



Meyachile centuncularis . 140 



Andrena aTbicans . 141 



