GENUS PAPILIO 85 



20. Papilio Arizonensis. 



Plate III ; Figure 20. Female ; from W. H. Edwards, 

 1885. 

 Arizonensis is a variety of the West Coast Rutulus, the mark- 

 ings being emphasized and otherwise modified by the influence of 

 the arid, semi-desert environment. This form is found only in 

 the higher mountains of Southern Arizona, the Catalinas, Santa 

 Ritas, and perhaps some others, and at rather high elevations. 



21. Papilio Ammoni. 



No figure. 



This form of Papilio was described by Behrens (not Behr) as 

 a variety of Rutulus. I have never had a specimen of Ammoni, 

 and cannot, therefore, illustrate it. The description reads: "A 

 very peculiar form, in which the ground color of all the wings is 

 of deep but rather dull orange color, and the bands and marks 

 of the upper side are all rather broader and more distinct than in 

 the normal Rutulus. The orange color prevails also on the under 

 side, though a little mottled with lighter shades. Four specimens, 

 male and female. Nevada." No mention was made of date, nor 

 was any particular locality named. But the Author of this book 

 was at that time well acquainted with Mr. Behrens (since de- 

 ceased), and corresponded regularly with him, and knew gen- 

 erally of his goings and comings, in the butterfly pursuit, and 

 therefore feels warranted in saying that doubtless Ammoni was 

 taken near Reno, Nevada, in 1886 or 1887. 



Now Nevada is not all a desert country, but it may be classed as 

 semi-desert, and give no oflfence to the residents thereof. Am- 

 moni, we may therefore call the desert variety of Rutulus, deeper 

 in yellow coloring, but not differing in any other way. I am 

 thus somewhat particular in speaking of Rutulus and Ammoni, 

 because further along you will find a case similar, in another group 

 of Papilios when I come to speak of Zolicaon, and Coloro, its desert 

 variety, with illustrations of both forms. 



22. Papilio Machaon. 



No figure. 

 The European species Machaon, which inhabits the more north- 

 ern parts of Europe and Siberia, is said to live also in Alaska, at 

 St. Michaels and elsewhere. I have never taken the species, and 

 will only say that it is very much like Zolicaon, being a little 



