THE BUTTERFLIES AND MOTHS 



177 



the inner margin of each hind-wing. Between the rows of yellow 

 spots on the hind-wings are bluish scales, which are particularly 



FIG. 264. The blue swallowtail butterfly (Laertias philenor). (Reduced one fifth) 

 (Photograph by Fiske) 



prominent in the females. The caterpillar is green, banded with 

 black and spotted with yellow, and feeds on celery, parsley, 

 parsnips, and nearly related plants. Like other caterpillars of this 



FIG. 265. Caterpillar 

 of the troilus butter- 

 fly (Papilio troilus] 



(Photograph by Weed) 



FIG. 266. The tiger swallowtail butterfly 

 (Papilio glaucus turnus). (Reduced) 



(Photograph by Weed) 



