250 LEPIDOPTERA. 



A^. Fore wings olive brown, dorsal blotcli hardly paler. 

 C. Fore wings narrow, marbled with silvery lines. 



I), 'plumhagana. 

 C"'. Fore wings trigonate, dusted with yellow, unicolorous. 



D. scncctana. 

 C^. Fore wings trigonate, dorsal blotch faintly paler, its 



anterior edge dark. D. herhosana. 



C*. Fore wings broad, dorsal blotch paler, its edges much 



darkened. D. simpliciana. 



C^. Fore wings short and blunt, dorsal blotch produced at 



the tip. D. consortana. 



1. D. petiverella, Linn. — Expanse -i inch (12 mm.). 

 Fore wings dark brown, with a curved, oblique, slender, 

 pale yellow dorsal blotch. 



Antennae, palpi, head, thorax, and abdomen dull brown. 

 Fore wings somewhat narrow, costa folded at the base, flatly 

 arched ; apex bluntly angulated, hind margin oblique ; 

 dark brown thickly dusted with yellow atoms; on the middle 

 of the dorsal margin is an oblique and curved pale yellow 

 blotch ; costa dotted with black and pale yellow ; below, a 

 lustrous stripe arising from one of these dots, reaches the 

 anal angle, and another runs into the hind margin ; below it 

 on that mai'gin are three or four black dots ; oilia brown 

 with a yellow gloss. Hind wings dark smoky brown ; cilia 

 dusky white. Female similar, but without the costal fold. 



Undersides of all the wings leaden brown ; costa of fore 

 wings dotted with yellow. 



Occasional specimens are found in which the dorsal streak 

 is divided across, so as to form two yellow spots. 



On the wing in June, July, and August, apparently in two 

 generations. 



Larva sluggish ; pinkish white ; head shining yellow 

 brown, with chestnut brown sutures ; dorsal plate broad. 



