THE CANADIAN ENTOMOLOGIST. 367 



Ohio, on the south shore of Lake Erie. Whether the members of 

 this band were migrants from the shores of Hudson Bay and Lake 

 Athabasca, far away to the northwest, or whether they had gathered 

 there from the east or west it was of course impossible to say. 



The next band to be observed was at Urbana, IlHnois, Sep- 

 tember 12, 1902, also in the afternoon, but at a temperature of 55'^ 

 Fahr., with a brisk northwest wind and clear sky. Either this or 

 another band of butterflies of this species was reported at Milledge- 

 villc, Illinois, about 160 miles to the northwest of Urbana, three 

 days prior, while evidently still another was reported at Hoops- 

 town, Illinois, some 35 to 40 miles north-east, a few days later. 

 Whether or not these all belonged to the same band of migrants, 

 from whence they came, or how the members came to be associated 

 together, is still an unsolved problem. At Urbana, the company 

 moved away on the morning of the 13th, but the usual number 

 were observed wandering about, in a perfectly natural way, during 

 the remainder of the month. 



The third migration, observed by the writer, took place on 

 September 12, about 3 p.m., on the Mall in Washington, D.C. 

 The weather w^as cold, with light n.w. wind, but the sky was un- 

 clouded. This last, however, was not further investigated. 



The daily press of Chicago, Illinois, September 13, one day 

 prior to the occurrence in Washington, called attention to sw^arms 

 of this butterfly observed congregating in the parks and gardens 

 of the city and starting southward on their journe3\ 



While it is true that this insect is of no economic importance, 

 and of far too common occurrence to interest the collector, yet it 

 seems to me that studies of the migrations of this species are well 

 worth while, and the results would, beyond a doubt, prove of 

 material aid in studying a similar habit in much more important 

 species. The migration of insects is of itself an interesting problem, 

 and a little care in observing and recording the appearance of these 

 migrations and under what conditions these took place, would 

 surely repay the many entomologists, amateurs and professionals 

 scattered over Canada and the United States. 



ON THE STATUS OF SOME SPECIES OF THE 

 GENUS PANURGINUS. 



BY J. C. CRAWFORD,WASHINGTOX, D. C. 



In a paper on the bees of Nebraska,* Messrs Swenk and Cock- 



erell say that a comparison of cotypes of Panurginus ?iebrascensis 



with specimens of P. ornatipes shows that the two are synonyms 



and that P. boylei is a subspecies. The types of all of the involved 



*Ent. News, XVIII., 183, 1^7^ 



December, 1912 



