24 



IOWA STUDIES IN NATURAL HISTORY 



Second joint of palpi closely appressed, third porrect, small. 

 Antennae a little over one-half as long as primaries, club slender, 

 apiculus shorter and distinctly more slender than remainder. 

 Primaries broad and short; outer margin evenly rounded to 



slightly sinuate, about as long as 

 inner; costa evenly rounded, rela- 

 tively short, without fold in one 

 ///2^\ species. Cell two-thirds as long as 

 wing; vein 5 slightly nearer to 4 

 than to 6. Secondaries with anal 

 angle produced into a long tail; 

 outer margin slightly excavated op- 

 posite cell and before tail, some- 

 times slightly crenulate. Fig. 6. 



The above description is taken 

 from simplicius and eurycles. Pro- 

 teus has a longer cell as shown in 

 the figure and both proteus and 

 Pig. 6. Goniwus. a. Palpus of sim- dorantes have relatively shorter 



plicius Stoll. b. Club of antennae of 



simpiiciMs stoii. c. Neuration of pro- antennae. It may prove desirable 



teus Linn 



to use Eudamus for these two 

 species, but without knowing more of the related Central Amer- 

 ican fauna I cannot make a satisfactory decision on this point. 

 Of the other three North American species which I here remove 

 from Goniurus I feel that albofasciatus and zilpa warrant the 

 establishment of a new genus, and that the relationship of alceus 

 to melon, in spite of its tailed secondaries, is too close to be dis- 

 regarded. 



Key to the species 



1. Upper surface with shining green hairs proteus 



Without green hairs 2 



2. Fringes checkered; spots not united to form a straight band, .dor antes 

 Fringes not checkered ; band usually present 3 



3. Band always present; no costal fold in male; outer margin of primar- 

 ies slightly sinuate eurycles 



Band sometimes broken or even absent; male with fold; outer margin 

 slightly convex simplicius 



1. GONIURUS PROTEUS 



Papilio proteus Linn., Syst. Nat. I, 484, 1758. 



Seudder, Butt . New Eng., n, 1386, 1889. 



Biol. Cent.-Am., Bhop. II, 277, pi. 75, f. 5, gen., 1893. 



