LEPIDOPTERA 



OF 



NORTH AMERICA. 



SEC. I. RHOPALOCERA. 



Antennae filiform, terminating in a knob or club. Wings, 

 at least the primaries, elevated in repose : no bristle or 

 frenulum at the anterior edge of the secondaries. No stem- 

 mata or simple eyes on the vertex. Flight diurnal. 



FAM. I. PAPILIONIDAE. 



Larva elongated, with two retractile tentacles on the first 

 ring. Perfect insect with the abdominal edge of the second- 

 aries concave. Discoidal cellule closed. Hooks of the tarsi 

 simple. Six feet adapted to walking in both sexes. 



PAPILIO LINN. 



Head large; eyes prominent; palpi very short, joints scarcely 

 distinct ; antennas elongate, club pyriform ; body, more or less 

 hairy, free from the wings ; wings robust, borders more or less 

 dentated, often terminated by a tail ; central cell closed ; nerves 

 prominent. 



Larva smooth, or bearing fleshy tubercles ; provided with ' two 

 retractile tentacles protruding from the first segment ; emitting a 

 strong odor when alarmed. 



Chrysalis without metallic spots, moderately angular, occasion- 

 ally a horn on the back ; head square, bifid, or truncate ; fastened 

 by the tail and suspended by a thread across the back. 



