2-|o B litter jiies of the Tosemite Valley. [zoe 



Jiinonia coenia Hbn. — Very common everywhere at low altitudes. 



Chionohas ivallda Mead. — This butterfly probably reaches a 

 higher altitude than any other butterfly found in the locality. I 

 only captured one and that was at the base of Mt. Lyell, at an alti- 

 tude of about ten thousand feet; but I have received some battered 

 specimens taken from the Mt. Dana glacier, at a much higher alti- 

 tude. This butterfly is a rapid flyer, being in this respect quite a 

 contrast to the rest of the family of Satyrs. 



Chrysophaiuis helloides Bdv.; Chrysophanus afota Bdv. — Several 

 of both species seen several times in the Tuolumne Meadows and 

 often in company with the following: 



Chrysophamis cupreiis Edw. — This beautiful little butterfly is 

 quite common in the Tuolumne Meadows, especially in the bare 

 and sunny spots on the hillsides. 



Thecla melimis Hbn. — Only one specimen captured, at Lake 

 Eleanor, July 27. 



Thecla griinus Bdv. — Quite common on the Eagle Peak trail, 

 coming out of the Yosemite Valley. Found about the oak ( Quer- 

 ciis chrysolepis). 



Thecla eryphon Bdv. — Quite common along the shores of Lake 

 Eleanor. 



Lyccena acmon Db. -Hew. — Very common in the lower altitudes 

 of the district. 



LyccBna baitoides Behr. — Only one specimen captured here. 



Lyccena scBpiohis Bdv.; Lycceyia rustica Edw. — Very common in 

 the Tuolumne Meadows, especially the former. Found congre- 

 gated in great numbers along the margins of streams and ponds. 



EiidamiLs tityrus Fabr. — Two specimens captured in the Tuo- 

 lumne Meadows. 



Nisoniades properthis Lint. — Several found in the same region 

 as the preceding. 



Besides the butterflies given above, I saw many other species 

 which I did not get near enough to identify. The region as a 

 whole is, however, a very rich one for a lepidopterist, and is partic- 

 ularly interesting to one interested in geographical distribution. 

 Looking at the Yosemite region from this standpoint, one can see 

 how similar it is to the rest of the Sierra region north of it. The 

 only one of the above butterflies peculiar to this one district is Colias 

 behrii, the remainder being either mountain forms pecuHar to the 



