DEILErHILA. 165 



Shield and terminal prolegs roughened with white dots ; caudal 

 horn yellowish-orange toward extremity, and rough. Feet yellow. 

 Length about three inclies. 



Pupation. The pupa is light brown, the head-case compressed 

 laterally and prominent; tongue-case not apparent. In Pennsyl- 

 vania the first brood of larvse reach maturity about the latter part 

 of July, and appear as imago about the middle of August. There 

 is doubtless a second brood, but I have never seen them during 

 autumn. In Texas, the first brood of perfect insects occurs from 

 about March 10th to April, and there is another about the middle 

 of July. 



Food-plants. Portulacea oleracea (purslane) and the turnip. I 

 have, however, fed the larva in confinement on the leaves of the 

 apple-tree. 



Mexico ; West Indies ; Canada ; entire United States ; the 

 western plains to the Rocky Mountains, and California. 



Clemens. 



2. D. chamaenerii Harris. D. intermedia Kirby, Faun. Bor. Am. p. 302. 

 Figured iu Agass. Lake Sup. pi. 7. 



Palpi beneath whitish. Head and thorax olive-brown, with a 

 white line on the sides, margined on the tegulre above with black- 

 ish. Abdomen brownish-olive, with small dorsal white spots, 

 with two lateral alternate white and black patches on the sides at 

 the base, fourth segment immaculate and fifth and sixth white 

 spotted. Beneath, the thorax is testaceous and the abdomen dark 

 brownish with white lines on the hind portions of the segments. 

 Anterior wings deep olivaceous, with a buff-colored band from 

 the inner margin of the base to the tip, sinuous posteriorly and 

 irregularly indented before ; a black patch at the base and one at 

 the origin of disco-central nervule, with an indistinct whitish discal 

 spot. The terminal margin dull brown and black, margined 

 before ; fringes brown. Posterior wings black, with a rose-colored 

 central band, deepening toward the inner margin and including a 

 white spot; the hind margin is indistinctly marked with reddish, 

 and the fringes white. 



Mature Larva. Green, somewhat bronzed, dull red beneath ; 

 with nine round cream-colored spots encircled with black on each 

 side, and a dull red caudal horn. Harris. 



