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Becker's White
Butterfly.--This species, through the green markings of the under side of the hind wings, concentrated in broad blotches on the disk, recalls somewhat the species of the genus Euchloe, and by these markings it may easily be discriminated from all other allied species.
Early Stages.--These have been in part described by Edwards in the second volume of "The Butterflies of North America."
The species ranges from Oregon to central California, and eastward to Colorado.