COLIAS II.. III. 



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 witliout 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. 



Bodv above covered with greenish-yellow hairs, the collar dull red ; under side 

 yellow : legs pink : palpi yellow, reddish above and at tip ; antenna> brownish- 

 red above, pink below ; club brown, ferruginous at tip. 



Female. — Expands 2.5 inches. 



Upper side usualh" of a brighter yellow than the male, but often green-tinted ; 

 the marginal border of primaries broad, inclosing a series of ^-ellow patches, the 

 one on the upper median interspace usuallv wanting ; secondaries have the bor- 

 der sometimes nearly as broad as primaries, and in that case it partially incloses 

 vellow 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, 

 varvino- in same manner both as to shades of color and degree of irroration. 



Albixo, alwaAs female. Color greenish-white, mai'ked as in the type. In- 

 dividuals are occasionally met, the upper sides of which are of a .shade between 

 greenish-white an<l yellow, the mider side faintlj' blue-tinted. (Figs. 5, G, PI. 3.) 



Melanic var. Occasional and subject to much variation. So lar as known 

 to me, confined to the male. (Figs. 8, 9. PI. 3.) 



Egg. — Length .06 inch; narrow, fusiform, tapering evenly from the uriddle to 

 either extremity, ribbed longitudinally and crossed b}' numerous strii^ ; the ex- 

 tremities 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. cr). Deposited on cultivated clover, especially Trifolium 

 pratense, 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 buffiilo pea, Astralagus caryocarpus, 

 in Nebraska. The duration of this stage varies with the climate or the season. 

 At Coalburgh, the larva? 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. 



Young Larva. — Length .06 inch, cvlindrical, 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 ; 



