HESPERIOIDEA OF A^IERICA 27 



Outer margin of primaries slightl}' sinuate ; no costal fold in male 

 of melon; I have not seen a male of alcaeus. Fig. 7. 



To place such a strongly tailed species as alcaeus with a species 

 in which the secondaries are merely angled is radical, but a study 

 of related Central American species has led me to believe that 

 in this case, at least, it is justified. Alcaeus agrees with melon 

 very closely in structure, and the male genitalia of the two 

 species are very similar. 



1. CODATRACTUS ALCAEUS 

 Eudamus alcaeus Hew., Dese. Hesp. 3, 1867. 

 Skinner, Ent. News xii, 171, 1901. 



My only specimen is a female from ]\Iexico, and I have seen 

 no others. The reference to the Entomological News is the only 

 record of its occurrence in the United States vrith. which I am 

 familiar. 



2. CODATRACTUS MELON 



Heteropia meJon Godman & Salvin, Biol. Cent.-Am., Ehop. ii, 297, pi. lxxvi, 

 g. 26, 27, 1893. 



The typical form of melon is not known to occur north of Mexico. 



2a. race AEIZOXEXSIS 

 Heteropia melon var. arizonensis Skinner, Ent. News xvi, 232, 1905. 

 Skinner, Trans. Am. Ent. See. xxxvn, 186, pi. x, 1911. 



Baboquivari Mts., Ariz., July. 



Differs from true melon in the whiter marginal area of the secondaries 

 below. 



Genus TELEGONUS Hiibner 

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

 anaphus Cramer. 

 Palpi oblique, third joint distinct. Antennae with a long 

 slender tapering club, not sharply bent but cur\'ed at the middle. 

 Primaries broad, outer margin equal to inner; costa slightly 

 cuiwed, without a fold in the male ; outer margin verj' slightly 

 sinuate. Secondaries produced and angled at lb : outer margin 

 straight from vein 7 to the anal angle. Cell of primaries about 

 two-thirds as long as wing, discocellulars verj^ oblique; vein 5 

 slightly nearer to vein 4 than to vein 6; recurrent vein near 4; 

 vein 2 over one-half as far from base of wing as from 3. 



