The Crane-flies collected by the Canadian Arctic Expedition, 



1913-18. 



By CHARLES P. ALEXANDER, Ph. D. 



INTRODUCTION. 



The collection of crane-flies made by the Canadian Arctic Kxpcdition is 

 quite extensive, and includes about 100 specimens of .-idulis, l;irv;r. and pupji-. 

 The types and uniques have been placed in the Canadian National Collection: 

 certain of the paratypes and duplicates are retained in the collection of tin- 

 author. The present report has been divided into two general portions, tin- 

 first on the taxonomy of the adult flies, the second a consideration of the imma- 

 ture stages and the biological data secured by the collector, Mr. Frits .lohaiiH-n. 



The material represents as satisfactory a collection of Arctic American 

 Tipulida3 as has yet been brought together. The itinerary and general narrat i\ c 

 of the Southern Division of the Expedition has been recorded by Dr. Pi. M. 

 Anderson (1917). l 



BIBLIOGRAPHY. 



There have been rather numerous species of crane-flies described from the 

 Canadian Arctic Northwest, the more important reports on these collections 

 being as follows: 



Kirby. Win., (1824) in the supplement to Capt. Parry's first voyage described Stygeropis parrii 



(Kirby). 

 Curtis, John (1831) in the appendix to Ross's voyage to the Arctic regions, described Tipula 



arctica Curtis. 

 Loew, Hermann (1863-1865) in the Centuries of North American Diptera described the numerous 



species of Tipulinse collected by Robert Kennicott, now in the Museum of Comparative 



Zoology at Cambridge. These specimens bear the general label of "H.B.T," only a few 



of them haying any more exact label. In another paper (Proceedings of the Academy of 



Natural Sciences of Philadelphia, September, 1915, pp. 458-465) I have discussed Loew's 



species and their present condition. 

 Osten-Sacken (1859-1869) described most of the Limnobiinse collected by Kennicott and also 



(1876) Tipula besselsi, from Polaris bay, Greenland, at about 82 degrees north latitude, 



collected by Dr. E. Bessels in 1872. 

 Bergroth (1888) described several new species mostly from Sitka, Alaska. Most of these were 



rediscovered on the Harriman expedition (see Coquillett). 

 Williston (1893) described Stygeropis bergrothi from Alaska. The type was recorded as having 



been placed in the Kansas University collection, but is not mentioned among the types in 



Hunter's list (Kansas University Science Bulletin, vol. 8, No. 1. p. 18; 1914) nor have I 



been able to locate the specimen. 

 Doane (1900, 1901) described a very few species from Unalaska, his types being in the collection 



of the United States National Museum. 

 Coquillett (1900), The Crane-flies of the Harriman Expedition to Alaska, the types are now 



in the collection of the United States National Museum. 



Dietz (1915), two Limnobiine crane-flies collected by Francis Harper in the Athabaska country. 

 Alexander (1915-date), species collected by Kennicott in the Loew collection but never described 



by Loew; the types are now in the collection of the Museum of Comparative Zoology. 



The crane-flies of the Pribilof islands, now in the collection of the United States Biological 



Survey. 



The most important collections from the Arctic Northwest may be con- 

 sidered to be the following: Kennicott's collections, the Harriman Expedition, 

 the Pribilof islands collections, and the present one. 



1 Report of the Department of the Naval Service for the Fiscal Year ending March 31st, 1917. Ottawa: 

 A 1-2, pp. 22-70. Also Summary Report of the Ge ological Survey, Dept. of Mines, for the calendar 

 year 1913. Ibid. 1914, 1915, 1916. 

 Vol. iii 46963 1J 



