PROTECTIVE RESEMBLANCE, WITH EXAMPLES 97 



of this means of protection have heretofore been but httle 

 studied in our North American species of moths. 



Another view appears in the illustration below of a moth, 

 Stenoma schlaegeri, which I found in the woods. ^ The circum- 

 stances under which this moth was found show how persistently 

 certain sluggish behavior is associated with color markings 

 and form. When I came through the woods, this moth was 



The Moth Stenoma schlaajcri on the upper surface of a straio- 

 berry leaf. Its resemblance to bird excrement is striking. 



found resting on the upper surface of a leaf of wood straw- 

 berry. The wind was blowing quite strongly at the time, 

 which caused the leaf on which the moth was resting to sway 

 back and forth, ye\. the moth held fast to its position. 



In the sketch of the Animated Rolled Leaf will be found 

 observations on similar habits of Datana moths, of openly 

 exposing themselves on the surfaces of leaves. The resemblance 

 of this moth to bird excrement was so close that when first 

 noticed I almost decided to pass it by. The peculiar habit 

 of drawing and rounding its wings close to the sides of the 

 1 At Mill Creek, Illinois, May 30, 1903. 



