PAPILIO. 243 



in the female than in the male; but we have males before us in which they can 

 scarcely be traced. Keakirt described a Mexican example under the name of Papilio 

 asterioides 10 , and Mr. Strecker has figured a specimen under this name u . The latter 

 we believe to be strictly referable to P. polygenes ; but we are a little doubtful whether 

 Reakirt's insect belongs to the same species. 



As will be seen from the above list of localities, P. polygenes is abundant through- 

 out Mexico and Guatemala, chiefly on the higher grounds. Mr. Strecker says that he 

 has received it from Costa Rica, but our collectors have only sent us P. americus from 

 that country. 



A full account of the transformations and life-history of this insect will be found in 

 Mr. Scudder's work 2 . The larvae feed on Umbelliferee of many kinds. 



82. Papilio ameriCTlS. (Tab. LXXII. fig. 8, right harpe.) 

 Papilio americus, Koll. Wien. Denkschr. i. p. 354 (1850) 1 ; Stand. Ex. Tagf. p. 18, t. 12 \ 

 Papilio sadalus, Luc. Eev. Zool. 1852, p. 133, t. 10. f. 4 3 ; Butl. & Druce, P. Z. S. 1874, p. 365*. 



P. polyxeni affinis, sed fascia alarum communi interna multo latiore, in posticis dimidio cellulse distali occupante 

 distinguendus. 



Hab. Costa Rica ( Van Patten 4 "), San Francisco (Sogers); Panama, Volcan de 

 Chiriqui (Champion). — Colombia ; Venezuela \ Ecuadoe 3 . 



This species takes the place of P. polygenes in Costa Rica and all countries lying to 

 the south of it as far as Venezuela on the one hand and Ecuador on the other. It 

 may readily be distinguished from its ally by the much broader common ochraceous 

 band, especially on the secondaries. It does not appear to be subject to the same 

 variation as P. polygenes, and we have not any dark forms, such as are seen in the 

 allied species. 



It was first described by Kollar from specimens obtained by Sulkowsky, near Angos- 

 tura, on the Orinoco 1 , and subsequently by Lucas under the name of P. sadalus, from 

 examples taken by Bourcier in the environs of Quito in Ecuador 3 . It is commonly 

 met with in collections from Colombia. 



Note. 



Heraclides andrcemon, Hubn. Samml. ex. Schmett. ii. tt. 98, 99. 



Papilio andrcemon, Lucas, in Sagra's Hist. Cuba, vii. p. 203 ; Gray, Lep. Ins. Brit. Mus. 

 p. 24; Men. Cat. Mus. Petr., Suppl. p. 68; Feld. Sp. Lep. p. 21. 



This well-known Cuban Papilio is said by Gray, Menetries, and Felder to occur in 

 Honduras and Mexico, but we are unable to confirm these statements ; its admission, 

 therefore, into our fauna must remain in abeyance. 



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