Plate 27 



FiGUKB 1. Pyrameis virginiensis, male, Cabiu John. Mel., September 11, 1920. 



2. Pyrameis virginiensis, female, underside, Cabin John, Md., Septem- 



ber 11, 1926. 



3. Colias pJdlodice, male, Silver Spring, Md., September 2, 1927. 



4. Colias philodice, large male, Silver Spring, Md., August 3. 1927. 



5. Colias philodice, female, without light spots in the black margin of 



the fore wings; Silver Spring, Md., September 11. 1920. 



6. Colias philodice, late-spring female, Cabin John, Md., May 9, 1926. 



7. Colias philodice, early-spring female. Cabin John, Md., May 2, 1926. 



8. Colias philodice, white female without light spots in the black mar- 



gin of the fore wings : Essex, Mass., August 29, 1925. 

 284 



