THE CANADIAN ENTOMOLOGIST. 105 



SOME ARGYNNIDS OF PARK CITY, UTAH. 



(Elevation, 7,000 feet.) 

 BY ARTHUR J. SNYDER, EVANSTON, ILL. 



Any time before the middle of jane, entomological studies in the 

 mountains are apt to be interrupted by snowfalls ; but from that time 

 to September, one will seldom find a better or more interesting place for 

 study. The climate is delightful, and though the common opinion is that 

 no rain falls upon the great plateau, here as elsewhere, supposition? are 

 not facts. 



My brief experiences (covering portions of two summers) would 

 indicate that Utah receives as much rain daring July and August as the 

 State of Illinois. During the latter month, in 1893, there were frequent 

 showers, and at least two heavy rains. In July, 1895, we experienced 

 a very rainy day, and several showers. Nevertheless, at times it becomes 

 so dry on the mountains that one must seek the low, irrigated meadows to 

 find butterflies abundant. 



The genus Argynnis is well represented in the West and North-west. 

 From low lands to an elevation of 9,000 feet one finds many represent- 

 atives. 



The most striking species, as to colour and size, which I have found 

 there is A. leto. This insect must be seen alive to be fully appreciated. 

 Whether seen on the wing, or resting on a thistle blossom, it is a prize 

 well worth the collector's attention. It appears in Utah (Park City) early 

 in July, and its numbers gradually increase, until in August it may be 

 called almost common. As is so frequently the case, the males appear 

 first, and were found in the ratio of ten to one as compared with the 

 females. 



Mr. Maynard says Leto is found in California, Nevada, Oregon, 

 Washington, and Montana. It has been my good fortune to capture it in 

 Utah, Idaho, and Wyoming. I do not know how far East it has been 

 taken, but my friend, Mr. William S. Bates, took several specimens of a 

 female Argynnis, which I am satisfied are Leto, in Michigan during the 

 past summer, and I have heard that it has been taken in Minnesota. I 

 have never read that the female of Leto is dimorphic, but would not be 

 surprised to learn that it is, or that Leto and Cybele are, or were at some 

 time not far distant, one and the same species. 



It is not difficult to secure effgs of Leto, and were it not for the fact 

 that the larvas hibernate, there would be no difficulty in rearing the 



