HESPERIOIDEA OF AMERICA 23 



the antennae shows a tendency to be more slender and more 

 sharply bent. This has led me to the conclusion stated under 

 Proteides that the two genera are possibly not distinct. 



Key to the species 



1. Under surface of secondaries with a silky white patch 2 



No silky white on secondaires zestos 



2. Spots of primaries deep yellow and usually broadly contiguous. tityrus 

 Spots small and widely separated, or if larger, very pale yellow . exadeus 



1. EPARGYREUS ZESTOS 



Proteides zestos Geyer, Zutr. exot. Schmett. IV, 9, t. 106, ff. 615, 616, 1832. 

 Eudamus oberon Worthington, Papilio I, 132, 1881. 

 Skinner, Trans. Am. Ent. Soc. xxxvii, 193, 1911. 

 Florida, August and September. 



2. EPARGYREUS TITYRUS 



Papilio tityrus Fab., Syst. Ent. 532, 1775. 



Papilio clarus Cramer, Pap. Exot. i, 66, pi. xli, E, F, 1775. 



Holland, Butterfly Book 323, pi. xliii, f. 5, 1898. 



Smyth, Ent. News XIX, 191, pi. X, 1908. 



Skinner, Trans. Am. Ent. Soc. xxxvii, 192, 1911. 



Ranges throughout the United States and into southern Can- 

 ada and South America. June to August. 



ab. OBLITERATUS 



Epargyreus tityrus obliteratus Scudder, Butt. New Eng. n, 1402, 1889. 



Only three small, rounded spots in place of the discal band, and only one 

 small preapical spot. Silver on under surface of secondaries more exten- 

 sive than usual. 



3. EPARGYREUS EXADEUS 



Papilio exadeus Cramer, Pap. Exot. in, 118, pi. cclx, C, 1779-80. 

 Biol. Cent.-Am., Rhop. n, 299, pi. 77, f. 1, gem, 1893. 

 Skinner, Trans. Am. Ent. Soc. xxxvii, 194, pi. x, 1911. 

 Southern California, Arizona, New Mexico, March. 



Genus GONIURUS Hiibner 

 Gomurus Hiibner, Verz. bek. Schmett, 104, 1820. Type Papilio 



simplicius Stoll. 

 Eudamus Swainson, Zool. 111. (2), n, 48, 1831-2. Type Papilio 



proteus Linn. 

 ? Pohjthrix Watson, Proc. Zool. Soc. London, 1893, 19. Type 



Eudamus metallescens Mabille. 



