BUTTERFLIES AND MOTHS OF THE GREEN LANES. 147 



dusty scales completely covering the membrane. 

 Hub them off, and you will see the clear, transparent 

 membrane, resembling, to the naked eye, that ol 

 the insects just mentioned. Under the Fig. 99. 

 microscope, however, even this transparent 

 membrane differs, for you now see it 

 punctured with myriads of minute holes, 

 in each of which a distinct scale, or atom 

 of dust, had been implanted. These 

 butterfly scales may often be seen ter- 

 minating in a little peg, which is the 

 part that is implanted in the membrane 

 of the wing (Fig. 97). In the Common 

 White or Cabbage butterfly (Pieris 

 brassicfe) there are found two kinds of 

 these scales. Those of the Meadow-Brown 

 butterfly (Hipparchia janira) terminate 

 in a peg. The scales of this species 

 furnish a good test for the microscope, 

 in determining the fine lines (Fig. 99) 

 which striate the thicker and lower por- 

 tion. Catch one of the common blue 

 butterflies, that you are sure to see plen- 

 tifully on a sunny day, and its scales will 

 furnish you with a battledore-shaped ob- *?$. 

 ject, beautifully marked on the broad "-,x450. 

 snrface (Fig 100). Every species of butterfly, no 

 matter how near may be the external resemblance 

 in size, colour, or marking and many of our native 

 species are nearly related in this respect differs 



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