Genus Euchloe 



sara, except in being smaller, and having the margins of the hind 

 wings marked with dark spots at the ends of the veins. 



(b) Variety Stella, Edwards, Plate XXXII, Fig. 35, $ ; Fig. 

 36, 9 (Stella). The females of this form are prevalently yellow- 

 ish on the upper side of the wings; otherwise they are marked 

 exactly as the preceding variety. 



(c) Variety julia, Edwards, Plate XXXII, Fig. 34, $ ; Plate 

 XXXIV, Fig. 6, ? , under side (Julia). The only distinction in 

 this form is the fact that the black bar dividing the red apical patch 

 from the white on the remainder of the wing is broken, or tends 

 to diminution at its middle. 



Early Stages. Unknown. 



The species, in all its forms, belongs to the mountain States 

 of the Pacific coast. Flora, Wright, is regarded by Beutenmuller, 

 who has given us the latest revision of the genus, as identical with 

 sara. It comes nearer the variety reakirti than any other form, as 

 will be seen by an examination of the plates which give figures of 

 the types. Expanse, 1.25-1.75 inch. 



(2) Euchloe ausonides, Boisduval, Plate XXXII, Fig. 24, $ ; 

 Fig. 25, ? ; Plate XXXIV, Fig. 3, $ , under side (Ausonides). 



Butterfly. On the underside the fore wings are greenish; the 

 hind wings are marked with three irregular green bands, the 

 outer one forking into six or seven branches toward the outer 

 and inner margins. Expanse, 1.65-1.90 inch. 



Early Stages. The larva and chrysalis are described by Ed- 

 wards in "The Butterflies of North America," vol. ii. The cater- 

 pillar is pale whitish-green, with dark-green longitudinal stripes 

 on the side and back. It feeds on cruciferous plants. 



Ausonides ranges from Arizona to Alaska, and eastward to 

 Colorado. 



(3) Euchloe creusa, Doubleday and Hewitson, Plate XXXII, 

 Fig. 23, 6 ; Plate XXXIV, Fig. 2, ? , under side (Creusa). 



Butterfly. Similar to the preceding species, but smaller, the 

 white more lustrous on the under side, and the green markings 

 on the under side of the wings heavier. Expanse, 1.20-1.40 inch. 



Early Stages. We know very little of these. 



The species is reported from California, Colorado, and Alberta. 

 I possess a singular varietal form or aberration from Arizona, in 

 which the black spot on the upper side of the primaries fills the 

 outer half of the cell. 



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