PL. LVI 



to the genus Charaxes of the tropics of the Old World. On 

 the under side they closely mimic dried leaves. This assim- 

 ilation to the color of dead leaves is protective. 



GENUS AGERONIA HUBNER (THE CALICOES). 



Medium or moderately large-sized butterflies. Costal and 

 subcostal fused near base; cells of both wings closed. Upper 

 side of wings curiously marked with checkered spots, generally 

 some shade of blue with white; under side with broad paler 

 shades: white, yellow, or red. They are rapid fliers, alight on 

 the trunks of trees head downward, wings expanded against 

 the bark of the tree. When they fly they make a clicking 

 sound with their wings. The manner in which this sound is 

 produced is a mystery. Bates in his A Naturalist on the Ama- 

 zons writes about it but gives no explanation. In my rambles 

 in tropical forests I have heard it as the insects gyrated above 

 my head, but I do not know how the sound is made. 



There are about thirty species of the genus in tropical 

 America, two of which are occasionally found in southern 

 Texas. 



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