Engel : Lepidoptera of Western Pennsylvania. 29 



Nearly fifteen hundred species and varieties are enumerated in this 

 list as occurring within the region covered by it. There are in the 

 collections in and about Pittsburgh over one hundred species, which 

 have not as yet been determined. It will be observed from this that 

 the neighborhood possesses a very extensive lepidopterous fauna. 



RHOPALOCERA. 

 Family PAPILIONID^. 



5.^ Iphiclides ajax Linnaeus, var. telamonides Felder. 



April 30-May 15; var. marcellus Boisduval & Leconte, July 18- 

 August 20. General, but not common. Larva on Asiniiiia triloba. 

 II. Papilio glaucus Linnaeus, var. turnus Linnaeus. 



April 30-June 25 ; July 21-August 13. Common. Larvae on 

 wild cherry and tulip-poplar. [Both yellow and black females are 

 common. Editor. '\ 



13. Papilio troilus Linnaeus. 



May 7-June 25 ; July 21-Angust 10. Common. Larvae on sassa- 

 fras and spicebush. Var. radiatus Strecker. 

 Two specimens were reared by Mr. Lippold. 



14. Papilio cresphontes ^ Cramer. 



July and August. This handsome species is rare in this vicinity. 

 About twelve specimens are distributed in the various collections, 

 which were taken in the neighborhood. 



22. Papilio polyxenes Fabricius. 



May 20-June 25 ; July 14-August 27. Common. The larvae are 

 abundant on carrots and allied plants. 



23. Papilio philenor Linnaeus. 



May 24-June 10; July 14-September 15. Common. The larvae 

 are found on the two species of Aristolochia, which occur in Alle- 



Page 305 for " Psvsostegania " read Physostegania. 



Page 321 for "unipuncta" read unipunctata. 



Page 327 for " intextata " read intertextata. 



Page 334 for "athasiaria" read athasaria. 



Page 337 for " Hypeirtis " read Hyi'ERETIS. 



Page 343 for "armantaria" read armataria. 



Page 348 for " Abbotana " read Abbottana. 



^The numbers at the left correspond to those in Dyar's list. 



"^ P. cresphontes is not synonymous with P. thoas, as stated by Dr. Dyar. P. thoas 

 is a southern form, which occurs in Texas and southward, but is not known to occur 

 north of the Gulf States. Editor. 



