NOTES ON SOME OF THE BUTTERFLIES OF THE 

 YOSEMITE VALLEY AND ADJACENT REGION. 



BY EDWIN C. VAN DYKE. 



In the summer vacation of this year, I had the good fortune to 

 be one of a camping party, traveling through the Yosemite Valley 

 and adjacent regions in the National Park. During odd moments 

 around camp or on the march, I found time to do a little entomo- 

 logical work, chiefly upon beetles and butterflies. It is of the latter 

 that I wish to speak here, supplementing to some extent the article 

 of Dr. Behr in Zoe, Vol. I, as well as that of Mr. Harrison G. Dyar 

 in Entomological News, Vol. Ill, No. 2. In the region traversed, 

 I had the opportunity of observing between forty and fifty species 

 of butterflies, and concerning most of these I will here give the re- 

 sult of my observations. 



Papilio rutuhis Bdv. — Quite common in the lower valleys and 

 meadows of the region, where it may be seen skirting the willow 

 thickets or sporting around the flowers in the immediate neighbor- 

 hood. Found in the Yosemite and Hetch Hetchy valleys and 

 around Lake Eleanor. Never seen at a higher altitude than five 

 or six thousand feet. 



Papilio eurymedoii Bdv. — Very plentiful also throughout the re- 

 gion, but prefers the open spaces on the hillsides to the valleys. 

 Also often found flying at higher altitudes than the above. Most 

 of the specimens caught were in a more or less tattered condition, 

 which indicates that August is their last month in the mountains, 

 at least for that brood. 



Papilio daunus Bdv. — Several splendid specimens caught from 

 July 23 to 26, in the Hetch Hetchy Valley, and several later on at 

 Lake Eleanor. In both places they were caught while in the act of 

 drinking. 



Papilio zolicaon Bdv. — Often noticed on the ridges and tops of 

 mountains, at altitudes not greater than eight or nine thousand feet. 

 One was taken at the top of Sentinel Dome, July 11. 



Papilio indra Reak. — Only one specimen seen. This crossed the 

 Tioga road just ahead of us, when we were at an altitude of over 

 eight thousand feet. The species is probably found at much higher 

 altitudes than any of our Papilios, save in a few instances that of P. 

 zolicaon. 



