218 



iniddlci ol' Se|)((;iiil)cr, and ll.ying milil about, llic middle ol' Oclolx-r in tlin 

 New England States. Tlie larva is not unconiinon, feeding on sedges, ete. 



In coloration, the ten specimens collected by Lieutenant Carpenter do 

 no( differ from eastern ones; but on comparing tlieni (5 <? and 5 9 ) with fifteen 

 (10 c? and 5 9) s})ecimens from Massachusetts, I find lliatihe wings of the 

 Colorado moths are uniformly more pointed toward the a])ex, the outer edge 

 more oblique, and the wing narrower than in the eastern examples. The 

 fore wing of the largest Colorado moth measured 0.95 inch in length, and 

 Ihaf of the Massacluisetts specimen O.fJO inch. 



Larva. — Head of the same width as the prolhoracic segment, divided by 

 a slight median crease into two lobes. The body is cylindrical, of uniform 

 width throughout, a little thicker over the first j)air of al)dominal feet; pale 

 straw-yellow. Two subdorsal brown hair-lines, and two similar ones on the 

 sides, interrupted by two, large, conspicuous, angular, black dots, — a pair on 

 each ring. Beneath, three hair-lines on each side of the body. The head 

 and prop-legs are dotted with black. Lengtli, 1.50 inches. It feeds in Maine 

 on Car ex Pensylimnlca. 



It has been found, August 1-14, in Danvers, Mass., l)y jMr. Gray, feeding 

 upon the blackberry, wood- wax, wild indigo, etc .transforming into the i)upa 

 August 14, previously spinning a slight but well-formed web of yellow threads 

 among the leaves. 



Puj)a. — Pale yellow, dotted slightly with black. Head well rounded; 

 abdomen acute; wings reaching to near the hinder edge of the fourth abdom- 

 inal ring; length, 0.68 inch. It remains in the pupa state from three to 

 four weeks. For figures of the larva and pupa see plate 13. 



HyEMATOriS Hiibner. Plate 2, fig. 6. 



Jlwmatopis Hiibuer, Vorz , 301, 1818. 



Geyer, Hiibii. Zntr., 9, fiRs. 82:!, 824, l837. 



Guuii., Phal., ii, 170, 1857. 



W;ilk., List Lc|>. llet. Br. Miis., xsiv, 10.5:!, 1862. 



Front of the head rather longer than l)r()a(l ; male anteiuwe plumose, 

 th(^ branches very slender. Palpi slender, aeule, projecting .a little beyond 

 the front. Fore wings long and lathtM- narrow, much produced b)ward the 

 apex, which is pointed but. not tidcate ; costa straight, outer edge very ob- 

 licpie. Hind wings rounded at tlie apex, older edge with a distinct bend ; 

 the inner angle reaclu^s to the, end of the aI)domen. Venation: six subcostal 



