Engel : Lepidoptera of Western Pennsylvania. 31 



(Engel) ; Millvale, July (Lippold). This species is contained in 

 several other collections taken in this vicinity, but dates of capture 

 are lacking. (The larva feeds upon the various species of the genus 

 Cassia, and where these plants occur abundantly, as used to be the case 

 in the neighborhood of Tarentum, the insect is not uncommon in the 

 early fall. Editor. ) 

 85. Eurema euterpe Menetries. 



New Brighton, October 19 (Merrick) ; Pittsburgh, October 19 

 (Marloff), Millvale, September (Lippold). 



Family NYMPHALID^. 



92. Euptoieta claudia Cramer. 



Pittsburgh, July 15-August 11 (Engel & Friday) ; second brood, 

 September 28-October 20. Common. Specimens representing the 

 first brood are rather scarce, and are as a rule larger and darker than 

 those of the fall brood. 

 95. Argynnis idalia Drury. 



July 25-August 30. Rare. Nearly all of the collections contain 

 one or more local captures of this handsome butterfly. 



99. Argynnis cybele Fabricius. 



May 26-July 8; August lo-September 12. Common. I have 

 occasionally found the larvae under loose boards along fences in pas- 

 ture-fields. 



100. Argynnis aphrodite Fabricius. 



May 24-July 5 ; August 20-September 7. Common. The larvae 

 may be found in pasture-lands where violets grow. 

 102. Argynnis atlantis Edwards. 



Taken at Cresson by Dr. Holland and Mr. George Ehrman. 

 131. Brenthis myrina Cramer. 



May 30-June 15 ; July and August. Rather rare in the immediate 

 vicinity of Pittsburgh, but abundant at Idlewild and New Brighton, 

 141. Brenthis bellona Fabricius. 



May 14-June 25; July 3-30; September 7-12. Common. 

 146. Euphydryas phaeton Drury. 



Pittsburgh, June 12 (Marloff) ; New Brighton, June 17, 18 (Mer- 

 rick) ; Mr. Lippold has repeatedly collected the hibernating larvae in 

 a swamp at Aspinwall, and has reared them in abundance. 

 185. Charidryas nycteis Doubleday & Hewitson. 



June 20-July 10 ; August 1-20. Common. Several dozen larvae 



