THE STRUCTURE OF BUTTERFLIES. 



49 



7. Study the clothing of the wings. It is neces- 

 sary to use at least a lens for this ; if there is a micro- 

 scope in the school it should be used for this study. 

 It will be found that the dust covering the wings and 

 body is composed of scales, which are of regular 

 form ; and that in butter- 

 flies these scales are ar- 

 ranged in regular order 

 upon the wings. Fig. 22 

 represents part of a wing 

 of a butterfly greatly 

 magnified. In the upper 

 part of the figure the 

 membrane of the wing is 

 represented with the 

 scales removed. 



8. The butterflies, to- 

 gether with the moths, or 

 millers, and the skippers, which are insects that re- 

 semble butterflies, constitute an order which is 

 named the Lepidoptera. This name is from two 

 Greek words : Icpis, a scale, and pteron, a wing. 

 It refers to the scaly covering of the wings and 

 body. 



9. Make a copy of the following label, and fasten 

 it in your collection above the specimens of Lepi- 

 doptera : 



Fig. 22.— Part of \vin<^ of butterfly, 

 greatly magnified. 



