Boisduval's lupini is undoubtedly an alpine race of acmon oc- 

 curing at points in the high Sierras. 'In size it averages as large 

 as monticola. It is difficult to separate from large specimens of the 

 summer form of acmon, but a few points of differentiation seem fairly 

 constant. In the male it is noted that the marginal dark band on 

 upper side of primaries gives place gradually to the violet-blue ground 

 color. This marginal band is also wider than in other forms of acmon. 

 The orange band on upper side of secondaries is bordered internally 

 with a dark shading and the color is distinctively orange whereas in 

 typical acmon it shows a rosy lustre and is not usually internally 

 shaded. 



Plebeius monticola, Clemence is a well defined mountain race of 

 acmon occuring in the Southern Sierras, the type locality being the 

 San Gabriel mountains. It may be distinguished from other varieties 

 by the silvery-blue ground color, the broad marginal band on upper 

 side of primaries, and in the female, which is almost as blue as the 

 male, by the broad orange band of upper side of secondaries. Both 

 sexes show relatively heavier markings on the under side than do 

 other forms of acmon. 



Plebeius chlorina, Skinner is a form that has been much mis- 

 understood. Dr. Skinner's first description, occuring in the Entomol. 

 News, Vol. 13, p. 15, 1902, erroneously spoke of the female having an 

 "overlying iridescent, very light green." This was later corrected 

 in W. G. Wright's "Butterflies of th© West Coast," where Dr. Skinner 

 is quoted as saying "my three specimens are males." Undoubtedly 

 the original description was of a male rather than a female as 

 originally stated. I have a long series of this form from the type 

 locality in the Tehachapi Mountains. The males could be considered 

 as monticolas in which the silvery-blue had changed to a lustrous blue- 

 green. On the underside of the wings they can not be distinguished 

 from typical acmon. In size they are intermediate between typical 

 acmon and monticola. The female which seems to be associated 

 with this greenish male (though none were taken in copulation) is 

 almost identical with large sized specimens of the summer form of 

 acmon. The ground color of the former is perhaps more brown and 

 the orange band on upper side of secondaries uniformly wider. Only 

 one specimen shows a slight powdering of greenish scales on the 

 primaries, (in the basal area). All the others are a uniform brown. 

 There is wide variation, tending on the one hand to small specimens 

 that are indistinguishable from acmon, and on the other'to large, 

 orange-suffused examples that approach typical females of neurona. 



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