pink patch at base of wing; the discal spot usually duplex, there being one large 
round silvered spot, and a small one, either with or without silver, in the direc¬ 
tion of the outer angle, each edged narrowly with dark ferruginous, outside 
which is a broad ring either of pale ferruginous, or of deep yellow dusted with 
ferruginous; these rings usually confluent; the silver scales partially replaced by 
pink ; costal edge of primaries and fringes of both wings pink. 
Body above covered with greenish-yellow hairs, the collar dull red; under side 
yellow; legs pink ; palpi yellow, reddish above and at tip ; antennae brownish- 
red above, pink below; club brown, ferruginous at tip. 
Female. — Expands 2.5 inches. 
Upper side usually of a brighter yellow than the male, but often green-tinted ; 
the marginal border of primaries broad, inclosing a series of yellow patches, the 
one on the upper median interspace usually wanting ; secondaries have the bor- 
broad as primaries, and in that case it partially incloses 
yellow patches ; but most often it is narrow, and sometimes is reduced to a slight 
blackening of the upper half of the margin, or even to small clusters of scales at 
the ends of the nervules; discal spots as in the male; under side as in the male, 
varying in same manner both as to shades of color and degree of irroration. 
Albixo, a By ays female. Color greenish-white, marked as in the type. In¬ 
dividuals are occasionally met, the upper sides of which are of a shade between 
greenish-white and yellow, the under side faintly blue-tinted. (Figs. 5, 6, PI. 3.) 
Mel am c var. Occasional and subject to much variation. So far as known 
to me, confined to the male. (Figs. 8, 9, PI. 3.) 
Egg. —Length .06 inch; narrow, fusiform, tapering evenly from the middle to 
either extremity, ribbed longitudinally and crossed by numerous strise ; the ex- 
tiemities blunt, the base rather broader than the summit; color pale yellow 
(Fig. a.) when first deposited, which changes a few hours after to pale and then 
to dark crimson (Fig. a 2 ). Deposited on cultivated clover, especially Trifolium 
praterise, on the upper side of the leaf; also on the garden pea and on lupines. 
Mr. G. M. Dodge has found the eggs on the buffalo pea, Astralagus caryocarpus, 
m Nebraska. The duration of this stage varies with the climate or the season. 
At Coalburgh, the larvae emerged in July and August in four days, in October in 
ten days. In the Catskill Mountains, New York, Mr. Mead found the period in 
July to be five and six days. Mr. Saunders gives seven days, in Ontario. 
Iolxg Larva. Length .06 inch, cylindrical, of uniform size from second 
to eleventh segments, thence tapering to the last; color brownish-green; each 
segment creased four or five times transversely, the foremost ridge thus caused 
on each marked by three black tuberculous dots on either side ; similar dots in 
line below the spiracles; from each dot rises a short, whitish, clubbed process; 
