forming a natural group. They are all natives of South America, 

 where I discovered nine species. The females differ most strik- 

 ingly, and have hitherto been mistaken by authors not only for 

 distinct species, but as belonging to different genera. 



Their natural situation will be among the Pierida, with whose 

 .general habit they accord. 



The female of this species resembles Pap. lAcinia of Cramer, 

 except in having a short black stigma in the middle of the an- 

 terior border of the fore wings, pointing obliquely to the exte- 

 rior margin. Cramer's insect, however, is the female of another 

 undescribed species in my cabinet. 



The under side of the posterior wings in both sexes is the 

 same. 



