1882.] 157 [Hagen. 



Edwardsii. The young larva (Mr. Mead) closely resembles that 

 of C. Philodice. The eggs of C. Alexandra, presented to the 

 Museum by Mr. Mead, are similar to those described for C. Phil- 

 odice. The food plant sent by Mr. Mead is Astragalus plattensis 

 Nuttall, from Mr. L. Lesquereux's determination. 



Colias Emilia. 



C. Emilia W. H. Edwards, Trans. Ent. Soc. Phil, in, p. 12. Jan. 



1870. 

 H. Edwards, Colias, p. 10 (Calif. Acad. 1877). 

 Brooklyn Ent. Soc, March 1879. 



The species was described from one pair taken in Oregon, in 

 the collection of Dr. Behr. Of C. Edwardsii it is stated " this 

 species is near Emilia " and of C. Emilia, " this species resem- 

 bles C. Alexandra, from which it differs in the breadth and form 

 of marginal borders, in color of fringe, in discal spot of seconda- 

 ries beneath, in the presence of a pink spot at base, and in the 

 absence of greenish shade to both surfaces. It also differs from 

 any Colias with which I am acquainted in the shape of the hind 

 wings, which are remarkably produced at outer angles." W. H. 

 Edwards. 



Among the C. Edwardsii males and females from Oregon and 

 Washington Territory are specimens with more or less produced 

 outer angles of the secondaries. They form an uninterrupted 

 series from rounded corners to angles of 95°. One of those 

 examined by Mr. H. Edwards was declared to be a doubtless C. 

 Emilia. A careful comparison of the descriptions of C. Emilia 

 and C. Edwardsii shows the following differences ; those of C. Ed- 

 wardsii are put in brackets. 



Male. Black band of primaries cut to the edge by the yellow 

 nervures [nearly to the fringe] ; erose within [inner edge nearly 

 regular] ; a slight excavated spur on the inner margin [a short, 

 attenuated spur] ; discal spot yellow edged by black [black] ; 

 underside on costal edge deep pink [roseate] ; secondaries below 

 inclining to buff [ground color very pale yellow] ; at base a small 

 pink spot [a small roseate spot]. By comparing these differences 

 with the range of variation given above for C. Edwardsii, no one 



