NO. im. B VTTERFLIES OF BRI TISIT A MERICA—CAR Y. 431 



looked for from the Barren Grounds of eastern Mackenzie. The Grand 

 Prairie region, and other open country on the upper Peace River, should 

 also 3'ield interesting- species, several plains butterflies doubtless hav- 

 ing- their northern limits of range in this section. 



A most important addition to our knowledge of northern ])utterflies 

 Avill be in regard to their life histories. In the case of the majorit^y of 

 Arctic species these are ^^et to be worked out. 



In the present list, which should be considered preliminary, I have 

 attempted to collect and verify, so far as possible, tiie scattered 

 records of the past, and thus 1)rmg under one heading- our present 

 knowledge of the distribution of butterflies in the region treated. 1 

 have included records from outside of JMackenzie and Athabaska 

 wherever it has seemed advisable, and where such a record has an 

 important l)earing- upon the distribution of a species in the north. 

 Eighty-flve species and sul)species of butterflies are now known to 

 inhabit Mackenzie and Athabaska. Of this number 21 were collected 

 in the region for the first time in 1J^><»3— i h\ Mr. Preble and the writer. 



The nomenclature and sequence followed in the annotated list of 

 species is that of Dr. Harrison G. Dyar's List of North American 

 Lepidoptera [= Bulletin No. 52, U. S. National Museum, 1902]. 



ACKNOWLEDGMENTS. 



During the preparation of this paper the writer has been placed 

 under oldigations to Dr. Harrison G. Dyar, custodian of lepidoptera, 

 U. S. National Museum, for the determination of some of the more 

 obscure forms, as well as for access to the collections under his charge. 

 My thanks are also cordially extended to Sir George F. Hampson and 

 Francis A. Heron of the British Museum, who have kindly fur- 

 nished me with data regarding specimens in the collections under 

 their charge; likewise to \Villiam Beutenmiiller of the American 

 Museum of Natural History, New York. To Dr. James Fletcher and 

 J. A. Guignard, entomologist and assistant entomologist, respec- 

 tively, of the Canadian Department of Ag-riculture, I am also indebted — 

 to the former for valuable information, and to the latter for access to 

 the government insect collections at Ottawa. 



LIST OF DIURNAL LEPIDOPTERA. 



PAPILIO TURNUS Linnaeus. 



No specimens were taken by Mr. Preble and the writer, but nearly 

 all of the earlier collections made in the region contained Papilios 

 which have been referred to turnus by various writers. I have been 

 unable to verify the earlier records of P. turnus, and it is posfsible 

 some of them may have been based upon specimens of P. rutulus, the 

 species which we secured in 1903-4. 



