CONTENTS 



PAGB 



Systematic position of the species 775 



Economic importance 776 



Distribution 778 



Geological distribution 778 



Geographical distribution 778 



A summary of the crane-fly fauna of the world 778 



Lists of the species of adjoining States and provinces 780 



The crane-flies of New York 787 



Family Tanyderidae 790 



Family Ptychopteridae 790 



Subfamily Ptychopterinae 790 



Subfamily Bittacomorphinae 790 



Family Rhyphidae 791 



Subfamily Trichocerinae 791 



Subfamily Rhyphinae 791 



Subfamily Mycetobiinae 791 



Family Tipulidae 791 



Subfamily Limnobiinae 791 



Tribe Limnobiini 791 



Tribe Antochini 797 



Tribe Eriopterini , ... 798 



Tribe Limnophilini , . . . 805 



Tribe Hexatomini 812 



Tribe Pediciini 813 



Subfamily Cylindrotominae 815 



Subfamily Tipulinae 815 



Tribe Dolichopezini 815 



Tribe Ctenophorini 816 



Tribe Tipulini 817 



Distribution of the Tipulidae and related families by life zones 826 



The Boreal region 827 



The Arctic- Alpine zone 827 



The Hudsonian zone 828 



The Canadian zone 828 



The Canadian-Transition zone 830 



The Austral region 832 



The Transition zone 832 



The Upper Austral zone 832 



The Lower Austral zone 833 



The Tropical region 833 



The Tropical zone 833 



Seasonal distribution 834 



Immature stages 837 



The egg 837 



The larva 837 



The pupa 841 



Rearing the immature stages 843 



Aquatic forms 843 



Mud-inhabiting forms 844 



Fungus-inhabiting forms 844 



Wood- and bark-inhabiting forms 845 



j767 



