126 ANIMAL FORMS 
adhere to our fingers when handled. This feature, and 
the general plan of the body, which is much the same 
Fig. 78.-—The in (Argynnis cybele). siemens by A. L, MELANDER and 
C. T. BRuEs. 
throughout the group, enables us to recognize most of 
them at once. 
123. Development and metamorphosis——In some of the 
simplest insects, as in the bugs, the young at birth resemble 
their parents. In other insects the resemblance is not so 
close. The young grasshopper, for example, hatches, from 
an egg laid in the ground, with a ridiculously large head 
and staring eyes; still there is no difficulty in recognizing 
its relationships. During the next week internal changes 
take place. The shell is burst, and the grasshopper emerges, 
looking more like its parents than before. This process is 
repeated four or five times during the next few weeks, and 
the gradual changes thus produced finally bring the young 
insect to the adult form. This latter state has been attained 
by an incomplete metamorphosis. 
