280 AMERICAN MICRO-LEPIDOPTERA. 



Face, palpi, tuft and antennje white, extreme tips of antennae dark brown. 

 Thorax and basal two-thirds of the forewings shininjj white; apical third suf- 

 fused with golden. A rather broad golden basal streak begins at the base on the 

 costa and extends parallel to the fold, to the middle of the wing. In the ajiical 

 golden portion of the wing, there are three costal white streaks, all dark mar- 

 gined internally, and nearly perpendicular to the margin. Opposite the first 

 costal streak a dorsal white streak, dark margined internally; ojjposite the sec- 

 ond costal streak is a second indistinct dorsal streak. A black apical spot. Oilifi 

 whitish, tipped with fuscous around the apes. Marginal line in the cilia dark 

 brown. Expanse 7 mm. 



Hindwings and cilia pale grayish ocherons. Abdomen grayish ocheious 

 above, whitish beneath. Legs whitish ocherous. 



Eastern United States. 



The larvae make tentiform mines on the underside of the leaves of 

 various species of oak. 



Fitch in his description says "three or four costal streaks," mak- 

 ing the description applicable to two species, argentijimhriella Clem, 

 and quercialhella Fitch. Lord Walsingham (Ins. Life, iii, 326, 

 1891) distinguishes quercialhella from argentifimbriella by its hav- 

 ing three instead of four costal streaks. In order to avoid needless 

 confusion, the name quercialhella should be retained for the species 

 having three costal streaks, although Fitch's supposed type of qi(er- 

 cialbella in the U. S. Nat. Mus. collection is a specimen of argenti- 

 jimhriella. 



LiilhocolletiN c*Ieinen»>ella Chambers. 



(Plate XXI, Fig. 6.) 

 Lithocolletis demensella Chambers. Can. Ent., iii, 57, 85. 1871; xi, 91, 1879. — Wals- 

 ingham. Ins. Life, ii, 25, 1889.— Dyar, Bull. 52, U. S. Nat. Mus., 1902. 

 No. 6256. 

 "Silvery or glisteniug white. Antennse annulate above with brownish. Api- 

 cal half of the anterior wings pale golden, with four silvery white costal and two 

 dorsal streaks all dark margined internally. The dark margin of the first costal 

 streak distinct, oblique, and produced along the costa towards the base. The 

 first dorsftl streak opposite to the second costal, oblique pointing to the third cos- 

 tal. No basal streak. Apical spot black, nearly circular. Hinder marginal line 

 at the base of the dorsal cilia brownish, broad, continuous with the hind margin 

 of the second dorsal streak, and reaching to but not passing around the apical 

 spot; cilia silvery -tinged with i)ali' golden. Alar expanse one-fourth inch. 

 Kentucky — common." 



The above is Chambers' des(;ription of the species. It is common 

 at Cincinnati, Ohio, and mav be bred fi'om tentifoini mines on the 

 underside of leaves of sugpr ^»le. The pupa is suspended in the 

 mine by a few silken threads. The expanse of the imago is 6-6.5 

 ram. 



