IN COLORING AND STRUCTURE. 201 



and are generally beaded and more heavily striate 

 than the scales [Figs. 166, 167]. The same is true, 

 but with more variations, in the coppers and hair- 

 streaks. In the swallow-tails, where they have 

 been supposed to be wanting, they differ very 

 little from the scales, but are much smaller and 

 more coarsely striate. In the skippers, where 



FIG. 168. Scales of Thanaos fnneralie, X 285 ; a, one of the large riband- 

 shaped androconia, the striated markings of which are excessively delicate and 

 can only be seen when magnified more than 500 times ; b, one of the hair-like 

 androconia ; c, one of the ordinary scales. 



also they have not before been noticed, they pre- 

 sent the greatest variety in the same individual ; 

 in one group there are hair-like androconia and 

 others which are exceedingly large and riband- 

 shaped [Fig. 168]; in the other group, besides hair- 

 like and gigantic androconia, there are usually 

 some which are spoon-shaped with long handles, 



