Engel : Lepidoptera of Western Pennsylvania. 129 



. Batrachetra placendiella Busck. 



Pittsburgh, June 24-28 (Marloff). At rest on small twigs of 

 hawthorn. 

 . Batrachetra trichella Busck. 



Pittsburgh, June 23-July 14 ; August 3 (Marloff, Engel). 

 6066. Cosmopteryx gemmiferella Clemens. 



June 20-July 9 ; August 8-16. Rare, but generally distributed. 

 6088. Elachista praematurella Clemens. 



May 15-27; July 6-8 (Marloff, Engel). 

 . Elachista albicapitella Engel. 



Pittsburgh, June 12-17 (Engel, Marloff); New Brighton, June 24 

 (Merrick); Pittsburgh, June 7, 1905, Carnegie Museum. 

 . Elachista orestella Busck. 



Pittsburgh, June 11-14 (Marloff). 

 6094. Blastodacna (Elachista) bicristatella Chambers. 



Pittsburgh, May 24-June 6 (Engel, Marloff). Common at rest 

 on large hawthorn bushes. 



6107. Scythris basilaris Zeller. 



June 24-July 12. Fairly common. Found on the wing or rest- 

 ing on low vegetation on waste lands. 



6108. Scythris eboracensis Zeller. 



June 8-July 10. Common on waste lands. 

 61 10. Scythris impositella Zeller. 



Pittsburgh, May 26-June 24 (Engel, Marloff); New Brighton, 

 June 27-July 5 (Merrick, Engel). Rare. On flowers in meadows 

 and waste lands. 

 61 1 7. Heliozela aesella Chambers. 



Pittsburgh, May 5-14 (Engel); New Brighton, May 13-18 (Mer- 

 rick, Engel). Common at rest on trees in forests. 

 6125. Antispila nyssaefoliella Clemens. 



May 27-June 23. Common on and near sour gum trees. 

 6127. Stilbosis tesquella Clemens. 



June 19-July 29. Common in sunny places in the forests. 

 6130. Theisoa constrictella Zeller. 



Pittsburgh, June 12-July 16 (Engel, Marloff). 

 . Epermenia imperialella Busck. 



Pittsburgh, May 30-June 20 (Engel, Marloff); New Brighton, May 

 30-June 13 (Merrick). Found at light and among herbage in shady 

 woods. 



