BUTTERFLIES AND MOTHS. 
53 
Mimicry. The common milkweed-butterfly has a 
disagreeable odor and probably a disagreeable taste. 
On this account it is not a favorite food for birds. The 
Fig. 54.—The Milkweed-butterfly, a , dorsal view; b, ventral view. 
One half natural size. Drawn by A. E. Sanford. 
a b 
Fig. 55.—Limenitis Ursula, a, dorsal view ; b, ventral view. One half 
natural size. Drawn by A. E. Sanford. 
Limenitis Ursula , a smaller butterfly, furnishes a dainty 
morsel for bird palates. It would soon be exterminated 
were it not for the fact that it so closely resembles in 
color and markings the milkweed-butterfly, to which 
