PL. CXI 



GENUS PARNASSIUS LATHE ILLE 

 (THE PARNASSIANS). 



What has been said of the family will suffice to characterize 

 the genus. 



(1) Parnassius smintheus Doubleday & Ilewitson, Plate 

 CXI, Fig. 1, cT; Fig. 2, 9 (The Colorado Parnassian). 



This is a somewhat variable species, but may easily be 

 recognized by the figures we give. Expanse d\ 2.00-2.50; 

 9 , 2.25-3.00 inches. 



Ranges from New Mexico and Colorado west to California 

 and north to Montana. The caterpillar feeds upon Sedum and 

 Saxifraga. 



SUBFAMILY PAPILIONIN^ 

 (THE SWALLOW-TAILS). 



Large butterflies. As shown on Plate A, Fig. 10, the hind 

 wings lack the internal vein, its place being held by the sub- 

 median vein. There is great diversity of form in this group. 

 Many species are tailed, as are the three occurring in Europe. 

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