The Elephant Hawk-Moth's Caterpillar, showing his Trunk
Some people think, and they may be quite right, that these eye-markings frighten off birds and lizards and things like that, who would soon eat the caterpillar if they did not think that his eye-markings were really eyes, and that they must have a big body behind them.
You remember the eyes as big as tea-cups in "The Little Tin Soldier"? If you have not read that, read it as quickly as you can.
Eye-markings are very easy to see, and I am sure that you will be able to find four of them on the wings of the Peacock Butterfly.
Some people think that these frighten off creatures who might eat him, just like those on the Elephant Hawk caterpillar, and some people think just the opposite—that the eye-markings are so clear a mark that the butterfly's enemies will bite at them, and so get a mouthful of butterfly's wing, instead of the butterfly himself; which is, of course, all for the good of the butterfly. I don't think we can be quite sure that either of these reasons is true, but we may be certain that if the eye-markings were not somehow useful to the butterfly they would not be there.
The Peacock Butterfly
The upper eye-markings on the Peacock have nothing particularly curious about them, but those on the under-wings each form a clear man's face with a big moustache, whiskers, and a bald forehead. If you hold the paper a little way off, you will see it clearly. It is something like Mr. Balfour.
This is a full-face picture, but in the other moths, the Mother Shipton and the Magpie, you will find side-face pictures. The Mother Shipton takes its name from having the face of an old witch on each of its upper wings. I will leave you to puzzle this out for yourselves, but I will give you the hint that the old witch has a hooked nose and a pointed chin.
The Magpie Moth has the side face of rather an ugly boy with a button of a nose and his mouth wide open. This is made up by the markings of each pair of wings taken together, and can only be seen when the wings are in a certain position. I will give you a hint here, too, which will help you. The seventh spot on the border of the upper wing, counting downwards, is the boy's eye; and he has a fine head of hair.