INSECTS. 7 
most of the Beetle tribe it is furnished with short 
legs, capable of some degree of motion, though 
very rarely exerted. In the Butterfly tribe it is 
perfectly destitute of all appearance of legs, and 
has no other motion than a mere lateral bending 
or writhing when touched. In the Locust tribe it 
differs but very little from the perfect Insect, ex- 
cept in not having the wings complete. In most 
of the Fly tribe it is perfectly oval, without any 
apparent motion, or distinction of parts. The 
Pupm of the Bee tribe, and other Insects of a 
similar cast are less shapeless than those of Flies, 
exhibiting the faint or imperfect appearance of 
the limbs. Those of the Libellulns or Dragon- 
Flies are locomotive, as in the Locust tribe, but 
differ most widely from the appearance of the 
complete Insect, and may be numbered among 
the most singular in the whole class of Insects. 
I should here observe that the Linnaean term 
Pupa, wdiich most modern entomologists substi- 
tute for that of Chrysalis, was given from the 
indistinct resemblance which many insects bear 
in this state to a doll, or a child when swathed up 
according to the old fashion. 
From the Pupa or Chrysalis emerges at length 
the Insect in its complete or ultimate form, from 
which it can never change, nor can it receive any 
further increase of growth. This last or perfect 
state of an Insect is, in the Linnaean language, 
termed Imago. 
This surprizing alteration of shape during the 
different periods of an Insect’s life, is to be corp 
