204 CONNECTICUT GEOL. AND NAT. HIST. SURVEY [Bull, 



Geographical Limits. The area adopted in the present report is 

 ahnost that considered in Gray's "New Manual of Botany", seventh 

 edition, 1908, tliat is, northeastern North America, north to the 50th 

 degree of north Latitude, west to tlie 96th Meridian. The southern 

 limits include the south boundary lines of Kansas, Missouri, Kentucky 

 and Virginia. It is believed that this northeastern area includes 

 about all of the species that are regional to Connecticut and to the ad- 

 joining states of Massachusetts, Rhode Island and New York. A very 

 few extra-limital species have been included while undescribed spe- 

 cies still continue to be discovered within the area. The present list 

 for Connecticut includes 229 species. To this figure may be added 

 120 species that have been taken in either Massachusetts or New 

 York, or both, virtually all of which may well be taken in Connecti- 

 cut as a result of further collecting. The remaining species treated 

 herein occur elsewhere in New England and southern Canada, or in 

 New Jersey and Pennsylvania, southward and westward. Following- 

 each species is given a brief summary of range by states and prov- 

 inces, with particular reference to the occurrence of species in the New 

 England States and New York, the western and southern limits be- 

 ing indicated by the marginal states attained. These states and prov- 

 inces are abbreviated in accordance with standard symbols. Follow- 

 ing certain of the species, the life-zone or zones to which it is re- 

 stricted is given in parentheses. In Connecticut, three life-zones are 

 found, the Canadian, the Transition (Alleghenian) and the Upper 

 Austral (Carolinian). 



Regional Lists. Our knowledge of crane-fly distribution has 

 been built up through intensive collecting and study over a period of 

 many years. The following papers are of the greatest importance in 

 studying the area under present consideration. 



Ontario. 



Alexander, C. P. 



1926 Records of crane-flies from Ontario. 



Can. Ent., 58: 236-240. ( ll) 



1928 The same, Part II. 



Ihid., 60: 54-60. (159) 



Quebec. 



Alexander, C. P. 



1929 A list of the crane-flies of Quebec I 



Ihid., 61: 231-236, 247-251. (139) 



1931 The same. Part II. 



Ihid., 63: 135-147. (208) 



Winn, A. V., and Beaulieu, G. (as revised by Petcli, C. E. and Maltais, 



1932 A preliminary list of the insects of tlie province of Quebec. Part 



2, Diptera. 

 Quebec Soc. Prot. Plants, 24: 5-100. (246) 



New England. 



Johnson, C. W. 



1925 Diptera of New England. 



Occas. Papers Boston Soc. Nat. Hist., 7, no. 15: 1-326. (264) 



