120 BULLETIN UNITED STATES GEOLOGICAL SUEVEY. 



Leaf-miners of the under surface. 



Litlwcolletis quercitorum, Fiey & Boll. ". 



Lithocolletis Jitchella, Clem. 



Litlwcolletis basistrigella, Clem. 



Lithocolletis ceriferella, Clem. 



Lithocolletis quercipulchella, Cham. 



Jjithocolletis quercialbella, Cham. y Tentiform mines. 



Lithocolletis fuscocostella, Cham. 



Lithocolletis albanotella, Cham. 



Lithocolletis obstrictella, Clem. 



Lithocolletis hageni, Frey & Boll. 



Lithocolletis argentijiinbriella, Clem. 3 



Lithocolletis interynedia, Frey & Boll. Doubtful species. 



Lithocolletis mirifoa, Frey & Boll. Doubtful species. 



Ornix quercifoliella, Cham. Under edge of leaf turned down. 



Coriscium albanotella, Cham. Large tentiform mine. 



The following species either roll, fold, or sew the leaves together: — 



Ypsolophus querciella, Cham. 



Gelechia querciella, Cham. 



Gelechia quercinigrwella, Cham. 



Gelechia quercivorella, Cham. 



Gelechia quercifoliella, Cham. 



Gryptolechia quercicella, Clem. 



Machimia tentoriferella, Clem. Larva in a web. 



The following species feed in galls: — 



Ypsolophus quercipomonella, Cham. 



Gelechia gallcegenitella, Clem. 



Hamadryas bassettella, Clem. 



Blastobasis glandulella [Molcocera glandulella Eiley) feeds in acorns. 



Castanea AMERICANA. Chestnut. 



Lithocolletis castanewella, Cham. Larva in a blotch upper-surface 

 mine in the leaves. 



Lithocolletis, sp. ? Imago unknown. Larva in tentiform mine in 

 under surface of leaves. 



Bucculatrix trifasciella, Clem. The larva probably feeds on it. 



Tischeria castaneceella, Cham. Larva mines the upper surface of the 

 leaves. 



Nepticula castancefoUella, Cham. Larva in crooked, linear mines in 

 the upper surface. 



Fagus sylvatica. Beech. 



Gryptolechia faginella, Cham. The larva sews together the leaves in 

 August and later. 



