EDWARDS ON LEPIDOPTERA OF MONTANA. 51 7 



where it is common, and afterward by Dr. Hayden in Montana, and 

 seems to be limited to the mountains in its range. 



The larger /S'aif^n^Za? frequent open forests as well as grassy plains, 

 their larva3 living on the grasses. 



LYCiENID^. 



18. Thecla mopsus, Boisduval. 



This genus was represented by a single specimen of 7nopsus, a species 

 which is spread over the northern parts of the continent, and on the 

 Atlantic as far south as Georgia. 



19. Chrysoplianus ruhidus^ Edwards. 



A single specimen was taken near Three Buttes, August 8. The 

 species seems limited to Montana and westward to Oregon. Dr. Hay- 

 den has sent an occasional specimen from Montana. It is of a fiery 

 copper color, and forms one of a group of three, the others being siriiis 

 from Colorado and cupreus from Oregon. 



20. Lyccena melissa, Edwards. 



A number of specimens were taken at several localities. The species 

 ranges from Arizona to British America. 



No other Lyccenidce were taken, though doubtless Lyccena is numer- 

 ously represented on the forty-ninth parallel, and of Thecla and Chryso- 

 phanus three or four species of each should be common. These insects 

 likewise inhabit grassy plains and slopes, and the Theclas open forests. 



HESPEEID^. 



21. Fyrgus tessellata, Scudder. 



A species spread over the greater part of the continent, usually known 

 as sileus. 



22. PampMla Colorado, Scudder. 



Allied to comma of Europe, and common throughout the Eocky 

 Mountains. 



The Hesperidce are very numerously represented in the United States, 

 and comprise nearly one-fourth of all the species of diurnal Lepidoptera 

 within our limits. From the Eocky Mountains and west to the Pacific, 

 the species are much less numerous than in tlie eastern and southern dis- 

 tricts. 



