THE CLASSIFICATION OF BUTTERFLIES 



TABLE FOR DETERMINING THE FAMILIES OF 

 BUTTERFLIES 1 

 A. Butterflies in which the cubitus is apparently four- 

 branched ; and in which the anal area of the hind wings 

 is more reduced than the anal area of the fore wings, as in 

 the fore wings there are always two anal veins, and usually 

 all three are at least partially preserved, while in the hind 

 wings there is only a single anal vein (Fig. 25). 



B. The outer margin of the hind wings rounded, without 

 a tail-like prolongation. (Parnassiida), p. 42. 



The Parnassians. 



BB. Hind wings with one or more tail-like prolongations. 

 (Papilionidce) , p. 45. The Swallow-tails. 



AA. Butterflies in which cubitus is apparently three-branched ; 

 and in which the anal area of the fore wings is more re- 

 duced than the anal area of the hind wings, the former hav- 

 ing a single anal vein and the latter two (Fig. 27). 



B. Palpi much longer than the thorax. (Libytheidm), p. 210. 



The Long-beaks. 

 BB. Palpi not as long as the thorax. 



C. With only four well-developed legs, the front legs 

 being unused, much shorter than the others, and 

 folded on the breast like a tippet ; radius of the fore 

 wings five-branched. To determine the number of 

 branches of radius, count the two cubital and the 

 three medial branches first ; the branches left between 

 vein M, and the subcosta belonging to radius (Fig. 30). 



1 For a table of the families of skippers see page 257. 



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