Engel : Lepidoptera of Western Pennsylvania. 79 



Var. ferruginea Packard. 



June 27-July 29. Rare. Both forms are represented in most of 

 the collections. 



Family PLATYPTERYGID^. 



3225. Eudeilinea hermineata Guenee. 



May lo-June 11 ; July 21-29. Generally distributed, but rare in 

 all localities except New Brighton. 



3226. Oreta rosea Walker. 



May 29-June 25 ; July 21-August 12. Common. 



3227. Oreta irrorata Packard. 



New Brighton, July 14-17 ; September 4, four specimens (Mer- 

 rick). Taken at light in dense forest. 

 3229. Drepana arcuata Walker. 



April 29-May 31. 



Var. genicula Grote. 



August 12-30. Both forms occur generally in this section, but are 

 quite rare. 



Family GEOMETRIDtE. 



Subfamily Dyspteridin^. 



3232. Dyspteris abortivaria Herrich-Schseffer. 



May i2-June 15 ; July 9-August 12. Common. 

 3234. Nyctobia limitata Walker. 



March 25-April 26. Common, but local and usually near hemlock. 

 It is a very variable species. 

 . Nyctobia viridata Packard. 



Pittsburgh, April (Marloff) ; New Brighton, April 20-May 19 ; 

 July 26-August II (Merrck, Engel). A rare species, which was 

 formerly listed as Agia eborata Hulst. 

 3237. Cladara atroliturata Walker. 



April 12-29. Generally distributed, rare about Pittsburgh. Com- 

 mon at New Brighton. A very variable species. 

 3240. Rachela bruceata Hulst. 



Espyville, November 15, 1901 (B. Krautwurm). Mr. Krautwurm 

 observed a number of specimens in the locality mentioned, but mis- 

 took them for one of our common species and neglected to take more 

 specimens. 



