332 New genus and species of Papilionide. 
slightly concave; secondaries rounded, neither the apical nor the 
anal angles prominent, and no trace of a tail. 
Female.—Like the male, but larger, the spots near the costa of 
the primaries whitish, and an additional series of four small yellow- 
ochre submarginal spots ; secondaries with the yellow-ochre marks 
much more extensive, and even confluent in places; an additional 
submarginal row of ochre spots. Beneath with the spots of the 
apex of the primaries and those of the secondaries silver. 
Hab. Western Mexico: Sierra Madre del Sur, near 
Chilpancingo, at an altitude of about 4500 ft. (O. T. 
Baron). 
We are indebted to Mr. Baron for a pair of this 
interesting species, which, with a few other individuals, 
were captured by himself in the months of June and 
July a few years ago. The shortness of the antennze 
and the peculiar neuration of the wings at once show 
that it cannot be referred to any known genus of Papi- 
liomde. 
