Sept., 190S.] KeARFOTT : TORTRICID^ AND TiNEINA. 183 



The discovery of this species is due to Dr. Jas. Fletcher, with 

 whom I was on a collecting trip to a wonderful sphagnum swamp, 

 about twenty miles south of the Ottawa River, at Carsbad Station, 

 Ontario. He tells me that he had noticed for some years that insects 

 were killing the twigs of the larch and had occurred in sufficient num- 

 bers to be of possible economic importance. The larvae bore through 

 the terminal twigs, for from three to six inches, effectually killing 

 them and stopping further growth. Mr. Busck is responsible for the 

 generic determination. 



Chrysopora versicolorella, new species (PI. Ill, Fig. 3). 



Expanse 9-10 mm. 



Head and antenna bronzy black, latter with whitish pubescence ; median joint 

 palpi bronzy black, apical joint ochreous gray ; thorax irridescent gray ; abdomen 

 grayish fuscous, anal tuft and legs ochreous white, latter banded with dark brown. 



Fore-ioing. — The white ground color occurs as follows : on the lower three fifths 

 of wing from base nearly to middle ; a large triangular spot on middle of costa which 

 sends an attenuated fascia to dorsum, this is largely irridescent ; a pure white spot 

 on costa before apex, a smaller one below it on middle of termen and another 

 below this above tornus ; in some specimens these spots are so nearly connected 

 together that they form a very angulated terminal fascia. Above the white inner 

 patch is a blackish patch interrupted with pale blue metallic scales, a broad ovate 

 spot of this color divides it beyond its middle, touching the costa and continuing as 

 an irridescent fascia over the white area to dorsum. Between the middle and ter- 

 minal whitish spots or fasciee is an irregular patch of olivaceous ochreous, more or 

 less overlaid with metallic pale blue or pink on the lower and outer spurs. There is 

 an oblique blackish brown streak involving the apex and apical cilia, the inner end of 

 this indents the outer white costal spot and the one below it. Cilia fuscous, paler 

 outwardly, broken by white opposite the tornal white spot. 



HinJtvmg. — Pale shining gray, cilia and underside the same. Underside fore- 

 wing dark irridescent gray. 



Six specimens, Carmel, California, April, collected by Arthur H. 

 Vachell. 



Type in my collection. 



The three species accredited to North America can be separated 

 as follows : 



Dorsal margin on inner half of forewing white versicolorella K. 



Dorsal margin on inner half of forewing not white i 



I. Forewing with transverse silvery fascia before middle herman7iella F.* 



I. Forewing with fascia interrupted in middle lingtdacella CI. 



* I am not convinced that this European species actually occurs in the North 

 American fauna. 



