PROCEEDINGS OF THE UNITED STATES NATIONAL MUSEUM 



SMITHSONIAN INSTITUTION 



U. S. NATIONAL MUSEUM 



Vol. 108 Washington : 1959 No. 3408 



A REVISION OF THE BUTTERFLY GENERA THEOCHILA AND 

 TATOCHILA (LEPIDOPTERA : PIERIDAE) 



By Jose Herrera and William D. Field 



This is tlie second in a series of four papers treating the ''Tatocheilae- 

 PhiiHa" complex of genera. In this paper is offered a treatment of 

 the 14 species included in the genera Theochila Field and Tatochila 

 Butler. Because these genera have recently been defined by the 

 junior author (Proc. U. S. Nat. Mus., vol. 108, No. 3396, pp. 103-131, 

 1958), they are not further described here. 



Both genera are Neotropical in distribution, TJieochila being found 

 in the southern nontropical parts of Brazil, in Paraguay, and in eastern 

 Argentina and Tatochila being distributed from Colombia and Bolivia 

 south through Tierra del Fuego in the tundra, temperate forests, and 

 scrub areas. 



This study is based upon 620 specimens gathered from the collec- 

 tions of the U. S. National Museum; Museo Nacional de Historia 

 Natural, Santiago, Chile; Instituto Pedagogico, Universidad de Chile, 

 at Santiago; Museu Nacional, Rio de Janeu-o, Brazil; Fundacion 

 Miguel Lillo, Tucuman, Ai'gentina; Cornell University, Ithaca, N. Y.; 

 American Museum of Natural History, New York City; Chicago 

 Museum of Natural History; and British Museum (Natural History), 

 London. Thanks for the loan of this material are due to the officials 

 of all of these museums and most especially to Dr. Kenneth J. Hay- 

 ward of the museum in Tucuman, Mr. D. S. Fletcher of the British 



472317—59 1 467 



