95 
description calls for an unsilvered form, a feature borne out by the 
Kodiak types, but Edwards in his Butt. II, Pl. 25 figures a silver 
marked species, evidently one of the Sitka specimens, and remarks that 
the species occurs around Sitka in both silvered and unsilvered forms. 
The name, in sens. strict. can only apply to the unsilvered form; as 
stated above the race is very close to opis, but has heavier and more 
extended black shading at base of wings on upperside and the green of 
underside is more bronze-colored and diffuse. We do not know why 
Dyar has listed this as a variety of eurynome, according to rules of 
nomenclature euwrynome might become a variety of bischoffi, but never 
bischoffi of eurynome, as the name has two years priority. 
In conclusion we venture to describe two new races of which we 
have long series of both sexes and which are sufficiently distinct from 
described forms to warrant a name in our estimation. 
A. BISCHOFFI WASHINGTONIA subsp. nov. (PI. I, Figs. 5-8). 
Upper side of both sexes very similar to Colorado eurynome, with rather 
more black dusting at base of wings, but less so than in typical bischoffi; size 
considerably smaller than the average eurynome. Underside with the spots well 
silvered; ground color of secondaries a clear pale yellow with basal area of 
wings to post-median row of spots heavily and evenly scaled with green, leaving 
only traces of ground color in the cell. Expanse $ 43 mm., 2 47 mm. 
Hasitat. Mt. Ranier, Wash. (7000 ft.) (July 24-30) (McDunnough). 
74,79. Types, Coll. Barnes. 
We consider this to be the southern representative of the Alaska 
form; it is probably found on all the higher peaks of the Coast Range 
through Washington and Oregon ; Edwards in his description of erinna 
mentions a similar 9 from Mt. Hood. In a series of over 50 speci- 
mens captured only a single unsilvered aberration was found, so that 
the silvered spots may be considered an attribute of the race. Opis 
probably represents a British Columbia form of the same species in 
which apparently the silvering has been lost; more material from this 
region and from Alaska is necessary however to definitely define the 
races. 
A. EURYNOME LUSKI subsp. nov. (PI. I, Figs. 1-4). 
6 Upper side as in typical eurynome from Colorado; beneath, primaries 
rosy, pale ochreous along costa and at apex with the veins bordered terminally 
with orange-brown; subterminal spots pale, unsilvered; secondaries with the spots 
entirely unsilvered, pale ochreous, washed with green along costa, at base of 
