1068 Marvels of the Universe 
least two of them, however, in which the likeness is strong, though not exactly to the particular 
insect whose name they bear. 
These two are the Hornet Clearwing and the Lunar Hornet Clearwing. The latter we show 
in our photograph, which is from a female newly emerged from the chrysalis. Frankly, there is no 
resemblance to a hornet, for the hornet is marked with black on a brown ground, whilst the Hornet 
Clearwings are banded with black on a clear yellow ground, which gives them a strong superficial 
resemblance to a wasp. When the wasp and the Hornet Clearwing are placed side by side the veriest 
tyro could probably point out the Simon Pure and the Pretender ; but on a cursory glance almost 
anybody would say, “ There goes a wasp,” when a Hornet Clearwing passes by. 
When these Clearwings are still in the chrysalis skin their wings are clothed with scales like those 
a 
[Doubleday, Page & Co. 
a 
BLACK ANGEL-FISH. 
A food-fish which attains the length of two feet. It is common in the West Indies and on some parts of the American coast. 
of other moths. Many of them are rubbed off in the act of emergence and the others go almost in 
the first flutter of their wings. These insects have found that it pays to keep up this resemblance 
to a stinging insect, for their enemies—chiefly birds—who know the consequence of stings, have 
learned to avoid them. Those that most nearly resemble stinging insects are the ones that are 
most likely to survive the perils of insect life long enough to transmit their characters to another 
generation ; and so through the history of the race the tendency has long been in the direction of 
perfecting the imposture. 
ANGEL-FISH 
BY W. P. PYCRAFT, F.Z.S. 
Beauty and ugliness are relative terms, and the very thought of the one suggests the other. This 
association is possibly answerable for the use of the term “ Angel’’ fish, on the one hand, for a 
