330 AMERICAN MICROLEPIDOPTERA. 



basal third and margined internally with dispersed blackish scales, sometimes 

 interrupting it in the middle; the second just behind the middle and margined 

 internally with dispersed scales which are produced in the middle, dividing it 

 into two parts. In the space between the fasciae are a few scattered ocherous 

 scales and an irregular line of blackish scales through the middle. Near the 

 apex is a costal and a dorsal ocherous patch, sometimes meeting, with the space 

 between them and the second fascia more or less marked with a line of irregular 

 dusting, and separated from each other by a more or less dense cloud of dusting, 

 sometimes connected with the produced margining of the second fascia. Apical 

 portion white, mixed with ocherous, and densely dusted with black scales con- 

 nected with the line separating the costal and dorsal ocherous patches. Basal 

 third, of the wing more or less dusted with black and marked with ocherous; a. 

 small patch of black scales on the costa near the base, followed by a black dust- 

 ing sometimes arranged into two irregular bands upon an ocherous ground, of 

 which the more basal one is the broader. Hinder marginal line of blackish 

 scales. Cilia tinged with saffron. Expanse 6.5-8.5 mm., the usual size about 

 8 mm. 



Hindwings and cilia gray, the latter tinged with fulvous. Abdomen gray, 

 with ocherous anal tuft. Legs white, tibiae and tarsi spotted with black. 



Very common throughout the Atlantic States. The larva, which 

 is of the flat type, forms an irregular whitish blotch mine on the 

 upperside of oak, most commonly upon Quercus alba L. While 

 the species is usually confined to oak as the food plant, I have speci- 

 mens bred from Magnolia (District of Columbia) and Ostrya Vir- 

 giniana (Cincinnati), which cannot be separated from those on oak. 



Lithocolletis umbellularice Walsingham. 



Plate XXIII, Fig. 14. 



Lithocolletis umbellularise Walsingham, Ins. Life, ii, 78, 1889. Dyar, Bull. 52, U. 

 S. Nat. Mus., 1902, No. 6290. 



"Antennae white, evenly dotted with brown along their upper sides, the five 

 brown spots towards the apex being larger and more widely separated than the 

 others. Palpi shining white. Face shining white, frontal tuft yellowish in the 

 middle, saffron brown at the sides. Thorax golden saffron, whitish behind. 



" Forewings golden saffron, somewhat shining, a short white patch at the base 

 of the dorsal margin reaches to the fold and is exteriorly dark margined, the 

 dark margin of a somewhat similar white spot on the costal portion of the wing, 

 also reaches to the opposite side of the fold a little beyond it ; at one-fourth the 

 wing length is a waved white fascia running nearly straight from the dorsal 

 margin to the fold, and bulging outwards beneath the costa; this is distinctly 

 dark margined externally throughout and briefly so internally; immediately 

 adjoining the costal margin at half the wing length is a broad, very oblique, 

 white costal streak dark margined on both sides and freely dusted with blackish 

 scales around the apex; the black dusting is continued along the outer side of 

 an opposite less oblique dorsal streak, the apex of which reaches as far as the 

 edge of the costal streak above it; at three-fourths the wing length is a white 

 costal spot slightly margined with blackish atoms, and opposite to this is another 



