12 MODERN ARRANGEMENT OF 



in a small club or button, more or less conical 

 or triangular ; in others, slender and hooked at 

 tip. 



The insects of this tribe fly and feed by day. The cater- 

 pillars have sixteen feet, and live on vegetables. The pupa 1 

 are generally naked, or destitute of a cocoon, fixed to substances 

 by the posterior extremity of the body, and in many by a silky 

 fillet, forming a kind of half ring at the upper part of the body. 



FAMILY I. PAPILIONIDES. 

 A\ r ith four wings, elevated perpendicularly in a state 

 of repose ; the antennae having a club-shaped 

 termination, or almost filiform, without hooks at 

 the tip, with the exception of one genus, in 

 which they are setaceous and plumose in one of 

 the sexes ; the legs are provided with one pair of 

 spurs or spines. 



Subdivision I. Third joint .of the labial palpi very small and 

 hardly perceptible, or very apparent, and furnished 'with 

 scales ; hooks at the end of the tarsi projecting ; caterpillar 

 elongated, subcylindrical ; chrysalis of an angular shape. 

 Subdivision II. Six feet, formed for walking, or nearly similar 

 in both sexes; chrysalis fixed by a silky band by its pos- 

 terior extremity, or inclosed in a thick cocoon ; central um>la 

 of the lower wings posteriorly closed. 

 1. Ilexapoda. 

 A. Internal margin of the lower wings concave. 



The genera are PAPILIO, PARNASSUIS, and THAIS. 

 R. Internal margin of the lower wings arched, and projecting 

 over the abdomen to form a canal. 

 The genera are COLIAS and Pi: HI- 



