Separable from the preceding species by the black border 

 surrounding the hind wing, and the pale under surface. Ex- 

 panse 1.60-1.75 inch. 



Found in the Gulf States. 



(7) Terms proterpia (Fabricius), Plate CX, Fig. 4, 6" (The 

 Cadmium Orange). 



Our figure will enable the student to immediately recognize 

 it. Expanse 1.50-1.75 inch. 



Found in Texas, Arizona, and Mexico. 



SUBFAMILY PARNASSIIN^) 



(THE PARNASSIANS). 



This peculiar group of butterflies is classed with the Papilio- 

 nidse because the internal vein of the hind wings is always 

 wanting, a characteristic of all papilionine genera. The cater- 

 pillars are not provided with osmateria, or offensive scent- 

 organs, and pupation takes place upon the ground among 

 loosely scattered leaves which are interwoven by the larva 

 with a few loose strands of silk. The insects are mainly in- 

 habitants of the mountain regions of the northern hemisphere. 



185 



PL. CX 



