THE CANADIAN ENTOMOLOGIST. 241 



It becomes of importance to know the distribution oi F. Bairdii diud 

 Oregonia, as well as the hybrid, F. Brucei. I have never seen an 

 Oregofiia from Arizona, but have received many Bairdli from that terri- 

 tory: some from the Wheeler expeditions, some from Mr. Morrison's 

 catch. On the other hand, Oregonia flies in British Columbia, east of the 

 Cascade Range, and perhaps in other districts. Dr. Hagen and Mr, 

 Stretch took it in Washington in 1882 ; and the Doctor wrote a long 

 paper which appeared in Papilio II., p. 149, in which he took the ground 

 that Zolicaon and Oregonia were forms oi Machaon, "not to be separated." 

 He says nothing of having seen Bairdii, but, on page 160, says : " It is 

 probable that Brevicauda, Bairdii, Indra, Fergainiis, and probably 

 A}?iericus, all belong to F. Asterias." The Doctor's views of what con- 

 stituted a species were somewhat hazy about that time. But we may 

 conclude that he did not see Bairdii in Washington, or he would have 

 expressly said so in his paper. 



The only locality that I have been able, by correspondence, to 

 discover, where Bairdii and Oregonia have both been found, is in Squaw 

 Canon, Sioux Co,, Nebraska. Prof. H. G. Barber, of the Univ. of 

 Nebraska, at Lincoln, writes me that an Oregonia was taken in Squaw 

 Canon in 1893, and an example of Bairdii in July, 1892 ; in different 

 years, it will be noticed. Another specimen of Oregonia, Mr. Barber 

 says, was taken on Lodge Pole Creek, ih S.-E. Wyoming, in 1893 ; but 

 no Bairdii. Prof C. V. Piper, of the Washington Agr. College, at 

 Pullman, Wash., sent me several typical Oregonia taken there and in the 

 near-by district in Idaho ; but he had seen no Bairdii. 



(Nothing surprised me more than seeing our Eastern robin, T> 

 migrator itis, hopping about the lawn at Glenwood Springs, and I learned 

 from Mr. Bruce that it is common througliout Colorado : on the high 

 peaks even, above timber ; where it nests in the crevices of the rocks. 

 But if anywhere on those heights a miner's cabin is built, the robins 

 come, and always keep about it.) 



SUPPLEMENTARY. 



After the foregoing paper went to printer, I received from Mr. Bruce 

 a statement of the results obtained thus far from the pupse of so-called 

 Oregonia and Bairdii in his charge, and before spoken of. Thus : 

 I. Oregonia pupas gave — 



I. In fall of 1894, 5 Bairdii : 4 (^ , i $ . 

 2 Oregonia : \ $ , \ $ . 



