SEPTEMBER, 1859. 57 



Tongue wanting. Wings exceeding the tip of the abdo- 

 men; the anterior with costa nearly straight, hind margin 

 obliquely convex, inner margin nearly straight, but slightly 

 emarginate above the interior angle ; the posterior ovate and 

 both with rather short cilia. 



Species. 

 Fore-wings with two short dark brown streaks at the 



base of the fold. 

 Popeanella. 



Fore-wings with no basal streaks. 



Labial palpi in the $ as long as thorax. 

 Plumifrontella.* Hubescent, mixed with maroon-brown. 



Labial palpi in the not recurved on thorax. 

 Arcanella. Dark brown, with a purplish hue ; luteous-brown 

 in the fold. 



A. plumifrontella.* Labial palpi reddish-brown. Thorax 

 dull brown, tinged with reddish. Fore-wings rubescent and 

 maroon-brown intermixed, the former hue prevailing along 

 the fold, at the base along costa and disc, dusted with dark 

 brown; with a dusky or dark brownish spot on the end of 

 the disc, one about the middle of the fold and another near 

 the base. In some specimens these spots are quite indistinct. 

 Hind-wings dusky brown. 



Exp. al. 17 lines. 



Female not known. 



All my specimens of the following species are much faded 

 from exposure. The specific description will not, therefore, 

 apply accurately to the insect as it is found in nature. 



Antenna of the $ distinctly serrated beneath. 



A. Popeanella. Labial palpi dark brownish, whitish? at 

 the tip in the ? . Thorax dull brownish in the , with the 

 tegulse tipped behind with gray; whitish? tinged with brown 



* I received three specimens of this insect from Dr. Clemens ; it is totally 

 unlike any European form. H. T. S. 



