WM. G. DIETZ, M.D. 



297 



Two specimens, bred from Pyrus arbritifolia (choke berry). A 

 very distinct species. The white head and thorax, bright white 

 markings and subplical space and the peculiar undulating fifth cos- 

 tal stria give it a characteristic appearance. 



O. obliterella n. sp. — PI. IV, fig. 10. — Palpi white, apex of second joint 

 and a spot more or less distinct, on the third externally, fuscous. Head yellow- 

 ish-white, tufts intermixed with fuscous. Thorax white, edged with fuscous 

 anteriorly. Forewings purple-brown, markings white, distinct ; five or six costal 

 strise, fourth and fifth (from the apex) remote, more approximate towards the 

 apex, ground color not markedly darker between the striae; a few scattered 

 whitish dots. Plical spots large, first spot irregularly triangular, not quite reach- 

 ing the dorsal margin, second spot trapezoidal and attaining the margin, some 

 scattered white spots beyond the second plical ; anal angle white. Cilia with 

 three entire, darker lines, whitish; basal portion and below the apex darker. 

 Expanse 8-6 mm. ; .32-36 inch. 



Hab. — Penna. (Hazleton). 



Bred from Betula nigra (black birch). Very distinct; the fourth 

 and fifth costal striae are more widely separated, resembling thus 0. 

 arbutifoliella, from which it is readily distinguished by tiie fifth stria 

 not prolonged to the dorsal margin, the larger plical spots and the 

 general darker color of the insect. I have no notes about the larva. 



SPECIES. 



11. Ornix pninivorella Ch. 



12. ■' quadripundelln Clem. 



13. " vicinella n. sp. 



14. " strohivorella n. sp. 



15. " arbutifoliella n. sp. 



16. " obliterella n. sp. 



UNRECOGNIZED SPECIES. 



1. Ornyx festineUa Clem. 



2. " trepidella Clem. 



EXPLANATION OF PLATE IV. 



1. Forewing of Orvyx gtUtea var. solitariella, 



2. " '■ •' preciosella. 



3. " '' " kalmiella. 



4. " ■' " dubitella. 



5. ■' " " conspicuella. 



6. " " " arbitrella. 



7. ■' " " melanoteUa. 



8. " ■' '■ vicinella. 



9. " ■' " arbutifoliella. 

 10. " '' " obliterella. 



TRANS. AM. ENT. SOC. XXXIII. 



(38) 



AUGUST. 1907. 



