CO LI AS VIII. 
Taken in abundance by Mr. Mead, in Colorado, in tbe upper Arkansas Valley 
and in tbe vicinity of Twin Lakes, during July 1871. The species seems to re- 
place C. Alexandra, which is more peculiar to the Platte Valley, although individ- 
uals of both species are to be found Jn either district. Four-fifths of the females of 
Scudderii, taken were albinos, while with Alexandra the albinos were exceedingly 
rare. The latter species was first observed by Mr. Mead on the 15th of June, near 
the South Park, at an elevation of about 9000 feet, and a few days later it was 
abundant at Turkey Creek Junction. Many eggs were obtained, deposited on a 
dwarf species of Lupinus. A young larva was also found. It was three-fourths 
inch in length, clear green, with a double, yellow-white dorsal stripe and a single 
lateral stripe of similar color, each stripe enclosing a broken roseate line. 
o 
COLIAS MEADII. 
Colias Mendii, Edwards, Trans. Am. Ent. Soc. 1871. 
Secondaries presenting a large sub-ovate, ochraceous, glandular space at base of 
subcostal nervure, as in Edusa. 
Male. — Expands 1.7 inch. 
Upper side fiery orange, of uniform shade quite to the marginal border and 
with an opaline reflection ; bases of wings densely irrorated with black ; abdominal 
margin of secondaries green and yellow similarly irrorated; the border of prima- 
ries very broad, black, erose within, not much advanced on costa and projecting but 
a short spur on inner margin ; that of secondaries nearly as broad, covering the 
whole margin ; discal spot of primaries merely indicated by a few black scales on a 
deeper orange ground; of secondaries deep orange; fringes roseate mixed with 
yellow. 
Under side of primaries yellow green on costal and hind margins, buff on 
disk; the anterior part of the wing much specked with black; discal spot yellow 
in black oval; secondaries yellow-green, though varying in depth of color in in- 
dividuals, and much obscured by black scales; discal spot silvery in a large 
ferruginous patch, sometimes accompanied by a second small spot; a roseate spot 
at base; otherwise immaculate. 
Body above black; collar roseate, thorax and abdomen green; legs pale 
roseate; palpi green, roseate in front and at tip; antennae roseate; club brown 
tipped with fulvous. 
Female. — Expands 1.9 inch. 
Primaries orange, sometimes as bright as in the male, but often duller colored; 
