1. Fossil Butterfly (Chlorifipe wilmattaeCls.il.) from the Miocene shales of Florissant. 



Actual size two and three-eighths inches across the wings. 



Coulson Photo 



2. (Upper side). 3. (Down side). Basitarchia weidemeyerii Edwards, aberration 



nigerrima Ckll., Boulder, Colorado, found by Flven Nelson. 



Specimen in U. S. National Museum Nat. Mus. Phcto 



