8 



Found in large numbers throughout the State, and is our most injurious 

 butterfly, the larvse literally destroying the cabbage crop in many locali- 

 ties. It winters in the pupa state and the first ones appear about April 1 , 

 from which date until heavy frosts it may be taken. It is most abundant 

 in Central Indiana, about July 1, when the second brood appears. In the 

 southern part of the State a third brood appears about September 10, 

 the pupse of which survive the winter. In this country P. rapce is preyed 

 upon by one dipterous parasite, Exoride hirsuta; and by two hymenopter- 

 ous parasites, Pteromalus puparum and Apanieles glomeraius. Sometimes 

 as many as one hundred eggs of one of these parasites are deposited 

 within the body of a single caterpillar, and the number of larvse of 

 P. rapce which they prevent from reaching the perfect state, during a 

 single season, is an enormous one. 



NATHALIS, Boisduval. 



10. (39.) NATHALIS IOLE, Bd. 



Nathalie iok, Morris, Lep. N. A., 1862, 22. 



Mead, Rep. Wheeler Exp., V. 1875, 747. 

 French, But. E. U. S., 1886, 116, fig. 31. 

 Scudder, But. E. U. S. and Can., 1889, III, 1842. 

 Nathalis Irene, (Fitch), Morris, Lep. N. A., 1862, 22, 351. 

 This butterfly has been taken only in Jeflersou, Lake and Vander- 

 burgh counties. In the latter Mr. Evans reports it as found only one 

 season in November. Its range as given by Edwards is "Illinois, Mis- 

 souri and westward." Fiod plant of larva unknown. 



ANTHOCHARIS, Boisduval. 



11. (43.) ANTHOCHARIS OLYMPIA, Edw. 



Anthocharui olympia, Edw. But. N. A., II, 1884, 77, pi 16. 



French, But. E. U. S., 1886, 117. 

 SyncMoe olympia, Scudder. But. E. U. S. and Can., 1889, III, 



1844. 



Occurs in small numbers about Whitings, Lake County, during the 

 first half of May, where it has been taken by Mr. Chas. E. Wortbiugton, 

 of Chicago. It frequents cultivated grounds, gardens and meadows. 

 Food plant, unknown. 



12. (53.) ANTHOCHARIS GENUTIA, Fab. The Falcate Orange-tip. 



Anthocharis genutia, Morris, Lep. N. A., 1862, 20. 



Edwards, But. N. A., II, 1884, 83, pi. 17. 

 French, But. E. U. S., 1886, 118. 

 Scudder, But. E. U. S. and Can., 1889, II, 

 1147; III, pis. 15, 26, 65, 76, 84. 



