826 Charles Paul Alexander 



Genus Tipula Linnaeus (continued) 



Subgenus Tipula Linnaeus [continued) 

 T. ultima Alex, (continued) 



Kings County: Flatbush, September 28. 



Suffolk County: North Beach, September 18. 



Tompkins County: Ithaca, September 29 to October 10 (C. P. A,). 



Westchester Coimty: Peekskill, September 15 (Van Atta). 

 T. umbrosa Loew 



Essex County: Keene Valley, August 10 (J. A. L.). 



Fulton County: Sacandaga Park, June 24-29 (C. P. A.). 



Hamilton County: Long Lake, August 9 (J. A. L.). 



Herkimer County: Old Forge, July 25 (J. G. N.). 



Tompkins County: Ithaca, July 20 (L. W. C). 

 T. valida Loew 



Albany County: Helderbergs, June 12 (C. P. A.). 



Cattaraugus County: Rock City, Jime 16 (H. H. K.). 



Erie County: Lancaster, June 2-4 (M. C. VD.); North Evans, July 4 

 (M. C. VD.);etc. 



Fulton County: Woodworth's Lake, May 30 to June 15 (C. P. A.); Sacandaga 

 Park, June 1-21 (C. P. A.). 



Herkimer County: Indian Castle, June 13 (C. P. A.). 



Onondaga Coimty: Green Lake, June 8 (C. P. A.). 



Saratoga County: Corinth, June 22 (D. B. Y.). 



Tompkins County: Ithaca, May 26 to June 20 (C. P. A.). 

 T. vicina Dietz 



Erie County: Lancaster, May 31 (M. C. VD.), T. L.; Hamburg, June 7 

 (M. C. VD.). 



Regional species: Aeshnasoma rivertonensis Johns., Nephrotoma approximata (Dietz), N. 

 cingulata (Dietz), N.festina (Dietz), A^. hirsutula (Dietz), N. obliterata (Dietz), N. occi- 

 pitalis (Loew), N. penumbra Alex., N. pxmctum (Loew), A'^. stigmatica (Dietz), A'', temeraria 

 ^Dietz), A'', vittida (Loew), A^. wijalusingensis (Dietz), Tipula angulata Loew, T. annulicornis 

 Say, T.aprilina Alex., T. centralis Loew , T. ci ncticornis Doane, T. conspicua Dietz, T. fra- 

 terna Loew, T. huron Alex., T. johnsoniana Alex., T. mainemis Alex., T. megaura Doane, 

 T. morrisoni Alex., T. pachyrhinoides Alex., T". ternaria Ijoew. 



Distribution of the Tipulidae and related families by life zones 



North America may be divided into seven roughly parallel belts, or 

 zones, termed life zones, which extend more or less completely across 

 the continent and are distinguished from one another by peculiarities 

 of their fauna and flora, by the annual precipitation, and by other char- 

 acteristics. Beginning with the treeless Arctic-Alpine zone in northern 

 Canada and passing southward, they comprise the Hudsonian, the 

 Canadian, the Transition, the Upper Austral, the Lower Austral, and 

 finally the Tropical zone, the last-named being found in the United States 

 only in southern Florida and Texas. 



These belts are by no means regularly parallel. In certain locahties 

 they run north or south at right angles to their usual course and encroach 



