BUTTERFLIES OF MONTANA. 



35 



THE OLYMPIA ORANGE-TIP. 

 Synchloe olympia .-dwards. Fig. 32. 



Fig. 12. Synchloe olympia. 



Butterfly — Expanse, about 1.25 inches. Upper surface white, gray 

 at base of wings; a large gray patch at the apex of the fore wings, par- 

 tially replaced by white. Costal margin slightly specked with black; a 

 black bar at the end of cell. The hind wings have a few black scales 

 at the outer angle and a small wedge-shaped black spot near the base on 

 the costa. Under side white. The fore wings have a small gray sub- 

 apical patch on the costa, nearly covered with green scales, and a faint 

 greenish patch on the outer margin. Discal spot narrow, lunate, en- 

 closing a white streak. 



Hind wings crossed by bands of yellow-green on a gray ground. The 

 one near the base is slightly trifid on the costa, the outer one broaaiy 

 trifid, but running from the outer margin instead of the costa, the middle 

 and outer one joined on the median vein. There is also a spot of the 

 same color between the anterior ends of the second and third. 



Body black above, the under side white, the thorax tinged with 

 greenish yellow. 



Early Stages — The caterpillar is striped lengthwise with pale slate 

 color and bright yellow; feet, legs and head grayish green. The food 

 plants are the cruciferous species. 



Distribution — Found from West Virginia to the Rocky Mountains, and 

 from Montana southward to Te.'ias. In Montana collected abundantly by 

 Wiley at Miles City; taken by Cooley at Bozeman, and by Barnes at 

 Aldridge. 



