Genus Brenthis 



at once distinguished by the entire absence of the silvered mark- 

 ings which mai<e B. myrina so bright and attractive. 



(ii) Brenthis epithore, Boisduval, Plate XV, Fig. 17,5; 

 Fig. 18, 3, under side (Epithore). 



Butterjly. — This species on the upper side is pale fulvous, with 

 the markings slighter than in B. bellona, and the inner half of the 

 hind wings much more heavily clouded with fuscous. On the 

 under side the wings are somewhat like those of 5. bellona, but 

 less purple and mottled more distinctly with yellow. Expanse, 

 ^ , 1.50 inch; ?, 1.85 inch. 



Early Stages. — Undescribed. 



This species appears to replace B. bellona, its close ally, in 

 California, Oregon, and the States eastward as fiir as parts of 

 Colorado. 



(12) Brenthis alberta, Edwards, Plate XV, Fig. 15, 5 (Al- 

 berta). 



Butterfly. — This, the least attractive in appearance of the 

 species composing the genus, has pale wings with a " washed- 

 out" appearance on the upper side, almost all the dark markings 

 being greatly reduced or obliterated. On the under side the wings 

 are even more obscurely marked than on the upper side. The fe- 

 male is darker than the male, and specimens have a greasy look. 

 Expanse, $, , 1.55 inch; ? , i. 65-1. 75 inch. 



Early Stages. — Unknown, except the egg and the young 

 caterpillar, which have been most beautifully figured by Edwards 

 in vol. iii of "The Butterflies of North America." The only 

 locality from which specimens have as yet been received by col- 

 lectors is Laggan, in Alberta, where the species apparently is not 

 uncommon at lofty elevations above sea-level. 



(13) Brenthis astarte, Doubleday and Hewitson, Plate XVIII, 

 Fig. 14, 3 ; Fig. i^, ? , under side (Astarte). 



Butterfly. — This rare insect, the largest of the genus, may at 

 once be distinguished from all others by the very beautiful mark- 

 ings of the under side of the hind wings, crossed by a band of 

 irregular, bright-yellow spots, which are narrowly edged with 

 black, and beyond the black bordered by red. Expanse, 6 , 2.00 

 inches; $ , 2. 15 inches. 



Early 5/^^^5.— Unknown. 



The first description and figure of this insect were given by 

 Doubleday and Hewitson in their large and now very valuable 



135 



