April, J914 Bulletin of the Brooklyn Entomological Society 33 



probably because so labeled by Edwards. Itys is distinguished by 

 being mouse-colored above with little or no trace of the fulvous 

 suffusion into which typical sylvimis runs. It is identical with 

 sylvinus below. It appears hardly worthy of a varietal name. 



T. putnami I have studied from a series of over 200 specimens 

 from Provo City, Utah. It varies remarkably, but maintains cer- 

 tain constant characters which differentiate it consistently from 

 syhnnus. The males vary on the upper side from specimens 

 moderately suffused with fulvous at the anal angle and along the 

 wing margins of primaries and secondaries, to plain dark mouse- 

 colored specimens. The females vary similarly except that they 

 tend toward a greater amount of fulvous suffusion. On the under 

 side of both wings the median row of spots varies from a row of 

 heavy spots to an almost complete disappearance of spots. There 

 is a constant character of differentiation between putnami and 

 sylvinus to be found in the paleness and diffusion of the anal patch 

 of blue scales beneath on the secondaries and the constant diminu- 

 tive size of the orange spot near the margin between veins VII^ 

 and VIIo. This often consists of no more than a dozen scales in 

 putnami, whereas in sylvinus there is a well-defined patch which 

 usually covers an area i mm. in diameter. I think putnami 

 worthy of a varietal name. 



Mr. Wright in " Butterflies of the West Coast " shows figures 

 of a butterfly under the name of dryope, the coloring of which is 

 paler than typical sylvinus. This may be another variety or a 

 local race, as the specimens are from the mountains. It is not 

 dryope. 



In Mr. Wright's " Butterflies of the West Coast " figures 309, 

 309a and 311 agree with my determination of male itys except 

 that they are generally darker than my specimens. His 311b and 

 31 ic are female putnami I believe. 



Of T. dryope, Edwards, I know very little except for the meta- 

 types, male and female, in the American Museum of Natural 

 History, and one male which I possess taken in Marin County, 

 Cal. It is a distinctly tailless form and in that respect differs from 

 all the other forms in the group. It is allied to T. syhnnus more 

 closely than to the two following species. Mr. Wright figures 

 sylvinus under this name. 



