22 



THE CANADIAN' ENTOMOLOGIST 



Fore wings before the fascia purple brown, beyond it deep 

 golden brown with purple reflections; the general colour to the 

 naked eye is deep purple before the fascia and brown beyond it. 

 A silvery fascia crosses the wing at three-fifths, and is usually a 

 little broader on the margins of the wings. Cilia gray. 

 Hind wings deep purple, becoming brown toward the tip. 



Legs fuscous, tarsi of the middle and hind pair silvery. Ab- 

 domen purplish brown. 



Expanse: 6.5-7 mm. 



Described from three specimens bred on pin oak, Quercus 

 palustris Du Roi and nine captured specimens, all from Cincinnati. 



The mine is placed on the lower side of the leaf and is very 

 much contorted, winding back and forth, the bends almost con- 

 tiguous, and the frass is de- 

 posited across the entire breadth 

 of the mine. In its early por- 

 tion, the mine is scarcely visible 

 on the upper, side of the leaf, 

 except as a slight discoloration, 

 later it becomes more distinct, 

 because of the partially eaten 

 parenchyma. The mine is ex- 

 tremely long, but measures only 

 1 to .1.5 mm. in width at its end. 

 The accompanying illustration 

 shows the mine as it appears 

 when held toward the light; its distinctness has been somewhat 

 exaggerated in the drawing in order to show its course. Cocoon 

 dark brown, somewhat flattened, with projecting edges. 



The mines were collected October 13th and produced imagoes 

 the following May; the flown specimens were also taken in May. 

 The species appears to be single brooded. 

 Types in my collection. 



Nepticula opulifoliella n. sp. 



Palpi grayish ocherous. Tuft reddish ocherous, collar some- 

 times pale yellowish. Antennae fuscous, eye-caps pale shining 

 yellowish. Thorax dark fuscous, with purple and blue reflections. 



Fig 6 — Mine of A T . altella. 



