SUBFAMILY PAPILIONIN/E 



Butterfly. Generally large, and often with the hind wings 

 adorned by tail-like projections. The most characteristic struc- 

 tural feature of the group is the absence of the internal vein of 

 the hind wings. The submedian vein occupies the position usu- 

 ally held in other subfamilies by the internal. 



Early Stages. In that portion of the group which includes 

 the genus Parnassius and its allies, the caterpillars are not, so far 

 as is known, provided with scent-organs, and pupation takes 

 place upon the ground, or among loosely scattered leaves, which 

 are interwoven, at the time of pupation, with a few strands of 

 silk. The genus Papilio and its allies have large, fleshy, more or 

 less cylindrical caterpillars, possessed of osmateria, or offensive 

 scent-organs, and a general resemblance runs through the chrysa- 

 lids of all species, which are attached by a button of silk at the 

 anal extremity and supported in the middle by a silk girdle. 



Genus PARNASSIUS, Latreille 



(The Parnassians) 



" Some to the sun their insect wings unfold, 

 Waft on the breeze, or sink in clouds of gold; 

 Transparent forms, too fine for mortal sight, 



Their fluid bodies half dissolv'd in light." 



POPE. 



Butterfly. Of medium size, with more or less diaphanous 

 wings, generally white or yellow in color, marked with black 

 spots and round pink or yellow spots, margined with black. 

 The head is relatively small, thickly clothed with hairs. The an- 

 tennae are short and straight, having a gradually thickened club. 

 The palpi are very thin, straight, and clothed with long hairs. 



304 



