BUTTERFLIES AND MOTHS. 47 
Write a description of a butterfly whose name is 
unknown to you. 
Write a description of a moth. 
Summary of Drawings. (a) The wings as seen 
from above when fully extended. 
(6) Side view of butterfly with wings closed. 
(c) Side view of head—enlarged—showing proboscis 
and eye. 
(@) Imaginary cross-section of proboscis. 
(e) Larva, pupa, and imago of some butterfly not 
figured in the text-book. 
(7) The scales from a butterfly’s wing as seen with 
a microscope. 
(g) A portion of a wing, showing the arrangement 
of the scales. 
How to Tell Moths from Butterflies. Butterflies 
and moths are much alike. They may generally be 
distinguished by the fact that the butterfly has knobbed 
antenne, holds its wings erect in repose, and flies more 
often in the daytime. The moths often have feathered 
antennz, fold their wings horizontally over the back 
when at rest, and more often fly at night. 
Metamorphosis. The internal structure of the 
butterfly closely resembles that of the grasshopper, but 
Fic. 47.—Eggs of Lepidoptera. 
a striking difference appears in its metamorphosis, or 
the change it undergoes during its period of growth. 
The young grasshopper when it emerges from the 
egg looks much like the adult insect; from which it 
differs chiefly in its smaller size and in possessing 
smaller wings. A series of changes like that observed 
in the case of the grasshopper is spoken of as incom- 
