FAMILY BRUSH-FOOTED BUTTERFLIES. 83 



them and tlie brown margin an orange band. Under surface 

 gray-brown, more or less ferruginous, only the markings of the 

 fore wing repeated, the spots of the hind wing becoming small 

 and inconspicuous ocelli. Expanse more than 2 inches. 



Caterpillar. — Head dark glossy brown, sprinkled with yellow 

 tubercles, the summits crowned with an equal spine of moderate 

 height. Body spinous, black-gray, marked with minute, black- 

 edged orange dashes and dots transversely arranged and a pair 

 of maculate pale stripes next the spiracles ; spines nearly as long 

 as the segments, all furnished throughout with spinules, not stel- 

 late, luteo-fuscons with a metallic lustre. Length H inches. 



Chrysalis. — Brown with dusky shades and more or less 

 mottled and marked with black and cream color, the latter on 

 the abdomen; tubercles and alar ridge blunt and rounded. 

 Length 1 inch or less. 



The eggs, which are globose, with ten very thin high 

 vertical ribs and dark green in color, are laid singly on the 

 tips and nnJer side of the leaves of the food-plant and 

 hatch in four days. The caterpillar feeds on Gerardia and 

 a few other Scrophulariaceae, as well as on some other plants, 

 at first upon the under surface leaving only a skeleton, 

 afterwards openly and at all times with no web. The 

 chrysalis hangs from seven to seventeen days, according 

 to the season. The butterfly lives in the open country, 

 has a strong and vigorous flight, and is a southern spe- 

 cies, though it is seen occasionally as far north as south- 

 ern New England and the southern edge of the Great 

 Lakes. In the South there are several broods annually, 

 the butterfly hibernating; in the northern ^i\i't of its range 

 there may more probably be only two, and it is doubtful 

 whether in the farthest points at which it is found it is 

 indigenous, as all captures have been made late in the sea- 

 son, perhaps the progeny of individuals which have flown 

 far north beyond the natural limits. A single specimen 

 was even taken by Geddes in the Rocky Mountains of 

 Canada, to which it must certainly have flown from a dis- 

 tant point. 



