PL. CXX 



This fine insect is even larger than P. turnus, which it some- 

 what resembles, but from which it can at once be distinguished 

 by the two tails on the hind wings, followed by a lobe at the 

 anal angle. Expanse 4.00-5.25 inches. 



Found in the region of the Rocky Mountains from Idaho 

 south to Mexico, but not found west of the Sierra Nevada and 

 Coast Ranges in California. 



(6) Papilio pilumnus Boisduval, Plate CXIX, d" (The 

 Three-tailed Swallow-tail). 



Easily recognized from our figure. The lobe at the anal angle 

 is so much produced as to give the hind wing the appearance 

 of having three tails. Expanse 3.80-4.30 inches. 



A Mexican species which occasionally is found in Arizona. 

 It is one of the most beautiful species of the group to which it 

 belongs and is rare in collections. 



(7) Papilio cresphontes Cramer, Plate CXX, ? (The 

 Giant Swallow-tail). 



One of the largest and most showy species of the genus found 

 in our territory. The caterpillar feeds upon Ptelea, Xan- 

 thoxylon, and Citrus. It has a wide range from southern On- 

 tario to Florida and through the Mississippi Valley to Mexico. 

 Expanse 3.75-5.50 inches. 

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