LEPIDOPTERA I tJUMBvCID^. 403 



band, near the middle of which, on each wing, there is a 

 kidney-shaped spot of black with a whitish crescent. 



The Genus Ceratocampa embraces moths which in the 

 caterpillar state are armed with horns, and which eat the 

 leaves of forest-trees, and enter the ground to undergo 

 their transformations. The species are of gigantic size. 



The Regal Walnut-Moth, C. regalis, Fabr., expands 

 from five to six inches, the fore wings olive-colored, with 

 several yellow spots, and veined with broad red lines ; 

 hind wings orange red, with two large irregular yellow 

 patches before, and a row of wedge-shaped, olive-colored 

 spots between the veins behind. The larva feeds upon 

 the walnut-tree, and attains four or five inches in length. 

 It is now referred to Citheronia. It flies in July and 

 August. 



The Genus Dryocampa has the antennae deeply pec- 

 tinated to much beyond half the length, and thence 

 minutely serrated to the tips in the male, but simple in 

 the female. The larvae enter the ground to go through 

 their transformations. 



The Imperial moth, D. imperialis, Harr., Eacles 'imperi- 

 alis, Hiibner, expands from four and a half to five inches, 

 and the wings are yellow, thickly sprinkled with purplish- 

 brown dots ; a large patch at the base, a spot near the 

 middle, and a band towards the hind margin of each 

 wing, light purplish-brown. 



The Genus Cossus has the wings long, thickly veined, 

 and the antennae with a double row of short teeth along 

 the under side. 



The Locust-tree Carpenter-Moth, C. robinics, Peck, ex- 

 pands about three inches, the color gray, the fore wings 

 thickly covered with dusky netted lines and irregular 

 spots, and the hind wings more uniformly dusky. The 

 male is much smaller and darker, and has a large ochre- 

 yellow spot near the hind margin of the hind wings. The 

 caterpillar bores the locust-trees and the red oak. 



