1882.] 107 [Hagen. 



have purposely taken all specimens collected at the same day, 

 June 25, for the following table. 



1. P. Zolicaon, Type. 



a. Spot isolated above and below. 



b. Cell of primaries black. 



c. Abdomen largely black above. 



2. P. Zolicaon. 



a. Spot isolated above, connected below. 



b. c. As in 1. 



3. P. Zolicaon. 



a. Spot connected above and below. 



b. c. As in 1. 



4. P. Zolicaon — oregonius. 



a. As in 3. b. Cell black. 



c. Abdomen with a narrow black band above. 



5. P. oregonius. 



a. Spot connected only in one wing. 



b. Cell yellow ; c. as in 4. 



6. P. oregonius. 



a. Spot slightly connected above and below. 



b. Cell half black, half yellow. 



c. As in 4. 



7. P. oregonius. 



a. Spot not connected above. 



b. As in 5 ; c. as in 4. 



8. P. oregonius, Type. 



a. Spot connected above and below. 



b. Cell yellow. 



c. Abdomen with a narrow black band above. 

 Giants and smaller specimens of all forms are found. 



If these statements are carefully compared, it will be impossi- 

 ble to speak of two different species, and P. oregonius is so near 

 to P. Machaon that a specific separation will be impossible. The 

 external band of the primaries is sloping in P. Zolicaon and ore- 

 gonius, but some specimens of P. var. asiatica show a very simi- 

 lar tendency ; besides, the Kamtchatka form, P. Hospiton, and 

 the Japanese form have the band sloping. In Japan exist two 

 forms both with exaggerated insular characters. A spring form 

 of the size and pattern of P. Machaon with predominant yellow 



