THE CANADIAN ENTOMOLOGIST. 87 



Anthocharis Thoosa, Scudder, °. , Hayden, Bull, iv., p. 257, 1878. 



Male. — Expands from 1.25 to 1.4 inch. 



Upper side white ; primaries have a large orange apical patch, limited 

 on basal side by a broad black bar, which extends from costa to inner 

 margin : this is composed in part of the discal bar, which is broader than 

 is usual, but there is no break in its course, and either no narrowing below 

 the cell, or very little ; and scarcely any difference in texture, the entire 

 bar being coarse grained with rough edges ; the margin from upper to 

 lower end of the patch edged with brown narrowly, with a serration in 

 each interspace. Secondaries have a few black scales on the edge of 

 margin at each nervule ; on the anterior half of the wing these become 

 small clusters, but seem never very distinct. 



Under side of primaries dusted over the apical area and down hind 

 margin to median with brown scales, on a white ground at apex, but 

 pinkish ground outside the patch ; this is restricted, hardly half as large 

 as on upper side, more yellowish ; the discal spot confined to arc of cell, 

 with an angular sinus on outer side. Secondaries white, much covered 

 with gray-brown scales (like those of A. Julia) disposed in small clusters 

 mostly, along the nervures and branches ; these are connected by inter- 

 mediate scales near the margin, making a sort of border to the wing. 



Female. — Expands i.4*inch. 



Upper side white tinted with lemon yellow, deepest on disk of second- 

 aries ; the orange patch narrow ; the apical and marginal area brown, 

 enclosing a chain of yellow spots, which on lower part of margin cut 

 through the brown border ; the discal spot broad, blackish, erose on outer 

 side, not extending below extremity of arc ; on secondaries clusters of 

 scales at ends of all the nervules. Under side scarcely different from 

 male. 



From 3 ^ 1 °. sent me by Mr. Neumoegen and taken in Arizona, and 

 1 $ from same region by the Wheeler Expedition. 



The single female described by Mr. Scudder was taken at Mokiak 

 Pass, Arizona, " 20 miles east of St. George ; a pass in mountains between 

 St. George and Juniper Mts., in a very broken and rough volcanic 

 region." Scudder. 



Anthocharis Stella. 



Male. — Expands 1.4 inch. 



Upper side delicate lemon-yellow \ primaries have a large bright 



