ANNETTE F. BRAUN. 345 



almost uniting with the dorsal streak. Cilia ocherous, with a slightly darker 

 line through their middle. Expanse 8-9 mm. 



Hindwiugs and cilia gray, with an ocherous tinge. Abdomen gray, tuft ocher- 

 ous. Legs whitish ocherous. Hind tarsi white, with one or two joints faintly 

 tipped with black. 



Central United States. The mine occurs on the upperside of 

 buckeye, JEsculus glabra Willd. and ^Esculus flava Ait. It is a 

 broad linear tract sometimes containing as many as five or six 

 larvae. The winter is passed in the larval state, the period of hiber- 

 nation lasting from August until April of the following year. 



^Esculisella may be distinguished from all allied species by the 

 form of the first fascia, which is broken near the costa. 



Lithocolletis ostryarella Chambers. 



Plate XXIV, Fig. 10. 



LithocoUetis ostryarella Chambers, Can. Ent., iii, 111, 1871. Tin. No. Am., 72, 

 1872. Dyar, Bull. 52, U. S. Nat. Mus., 1902, No. 6335. 



Face, palpi and antennse white; antennae annulate above with brown. 



Thorax and forewings reddish ocherous. A white streak from the inner angle 

 to the fold, faintly black margined externally. Two white fasciae, the first begin- 

 ning on the dorsum at about the basal fourth, concave outwardly on the fold, 

 thence extending obliquely to the costa, which it reaches at about the basal third. 

 It is black margined externally. The second fascia, at about the middle, is 

 slightly oblique and black margined externally. At the apical fourth a costal 

 white streak black margined externally. Opposite it above the cilia is a very 

 oblique, long dorsal streak also black margined externally. Just before the apex 

 an oblique white streak on the line of the last dorsal, and not extending through 

 the cilia, is dusted behind with blackish scales. The scales in the apical third 

 of the wing are tipped with brown. Hinder marginal line in the cilia brownish. 

 Cilia ocherous, grayish toward the torntis. Expanse 6-7 mm. 



Hindwings grayish ocherous. Cilia grayish, tinged with ocherous. Abdomen 

 gray, tuft ocherous. Legs whitish ocherous, hind tarsi sometimes tipped with black. 



The larvae form irregular blotch mines on the upperside of Ostrya 

 Virginiana (Mill.) Willd. and Carpinus Caroliniana Walt. ; as 

 many as four or five sometimes occurring in one mine. The hiber- 

 nating larva? pass the winter in circular silken-lined chambers, the 

 outline appearing on the upper epidermis as a circular narrow 

 ridge ; a convex projection appears on the lower sid. 



The brownish dusting of the apical third of the wing is the dis- 

 tinguishing characteristic of ostryarella. Corylisella may also be 

 distinguished from ostryarella by the dorsal streak above the cilia 

 being nearly erect, while in ostryarella it is oblique and nearly 

 parallel to the edge. The fascise, especially the first, are also less 

 oblique in corylisella. 



TRANS. AM. ENT. SOC., XXXIV. (44) OCTOBER, 1908. 



