VOL. XXVIL LONDON, SEPTEMBER, 1895. No. 9. 



NOTES ON COLLECTING BUTTERFLIES IN WESTERN 



COLORADO, WITH A PARTICULAR ACCOUNT 



OF CERTAIN PAPILIOS. 



BY WM. H. EDWARDS, COALBURGH, WEST VA. 



In Vol. XXV., p. 253, I gave some account of the dimorphism of 

 F. Bairdii, mainly from the observations and experiments of Mr. David 

 Bruce. From what he had seen at Glenwood Springs, Colorado, he had 

 satisfied himself that not only Bairdii and Oregonia were one species, 

 but that F. HoUandii^ Edvv., formed part of the same. Though the two 

 first named differ in facies more decidedly than do Turniis and Riitiilus, 

 and Rutulus and either Euryttiedon or Daunus. Hollandii looks on the 

 upper side like Bairdii, but beneath, while in general like Bairdii, the 

 yellow spots are larger, making the surface much gayer. But the 

 notable difference is in the markings of the body ; Hollandii having the 

 yellow, black-striped body of Oregonia (as well as Zolicaon and Machaon), 

 while Bairdii has the solid black body of Asterias, with similar rows of 

 yellow dots. Hollandii therefore has the body of Oregonia, with the 

 wings o{ Bairdii, the latter somewhat modified. 



In 1892, Mr. Bruce obtained eggs by confining a Bairdii $ over 

 the food plant, and out of two pupse which alone survived a catastrophe 

 at his home (Brockport, N. Y.) came a Bairdii imago the next spring in 

 his hands, and a female Oregonia with me. Mrs. Peart had received a 

 it\^ of the larvt\3 out of that lot of eggs, and from these came one Bairdii 

 and one Oregonia. I related these facts in the paper spoken of, and then 

 said that two of the pupae which Mrs. Peart had were still alive, and 

 would give butterflies the second year, or in 1894. It turned out that one 

 Bairdii 5 did come from one of these pupaj, April 25th, 1894, but the 

 other pupa had died. 



In 1893, at the same place, Mr. Bruce sent me two eggs obtained 



from an Oregonia ? in confinement, from one of which resulted a Bairdii 



$ the same season, the other larva dying. And about two weeks later 



he sent me another lot of Oregonia eggs, from which I got four Bairdii : 



2 ^ , 29, the same season, no pupce hibernating. 



