131 



Phyciodes in the mountains of Colorado, and is found at all elevations 

 below timber line the whole summer. These butterflies are very fond 

 of flowers, but do not often congregate at wet spots in the road like 

 Tharosy Mr. Mead's remarks, of course, apply to north Colorado. 



I received a cluster of about loo eggs of Camillus from Mr. Nash, 

 at Pueblo, altitude 4400 feet, Sept. 3, 1884, laid on August 29th, by a 

 female confined in bag over a species of Aster. This female was also 

 sent, and was form E/nissa, banded across under hind wings. The 

 larvae hatched September 5th. I gave them during their stages leaves 

 of half a dozen species of Aster, all which were eaten readily. In 

 habits the larvse resemble Tharos, being exceedingly hardy, and suf- 

 fering none at all from close confinement. They are very rapid in 

 growth also, like Tharos, and unlike P. Picta, which I was feeding at 

 same time.* The first moult passed September 9th; the second, 12th; 

 the third, i6th; the fourth, 22d; and the first pupation took place Sep- 

 tember 28th. The first imago appeared October 5th, so that from 

 laying of Qgg to imago was but about five weeks. All the emerging 

 butterflies were of the summer form. I had supposed these larvae 

 would hibernate after third moult, as Tharos, at Coalburgh, would 

 have done at this season of the year, and as Picta did, but all went to 

 chrysalis. I had disposed of many larvae in one way or other, but ob- 

 tained 22 butterflies, 5 J' 17 9 , all of the Camilhis type, and so unlike 

 the female parent. 



Mr. Nash tells me that the species flies in June, at Pueblo, so that 

 the female which laid these eggs August 29th must have been of the 

 second brood of the year. If the dimorphism was strictly seasonal, 

 as in case of Tharos and Marcia, this female should have been of the 

 form Camillus. As it was Emissa, the second brood, — supposing the 

 winter brood to be Emissa, — may be composed of both forms, as in 

 the mid-summer brood of Grapta Interrogationis. If so, it differs 

 from the other dimorphic Phyciodes named. In this peculiarity the 

 Grapta spoken of differs from the rest of the genus on this continent, 

 so far as known, as in them the dimorphism is strictly seasonal. 



A QUESTION OF PRIORITY. 



By E. M. Aaron. 



During the summer of 1877 the late Mr. Boll, of Texas, collected in 

 that State a considerable number of species of butterflies, sets of which 

 were sent to Mr. Herman Strecker, of Reading, Pa., and Mr. Wm. 

 H. Edwards, Coalburgh, W. Va. These gentlemen, with their usual 

 promptitude in such matters, proceeded at once to a study of these 



* I have recently described the preparatory stages of P. Picta in Can. Ent. vol. i6, p. 163. 



