10 
clown in the “ Or dines et Genera Insectorum ,” or Systematic Ar- 
rangement of Insects, by the celebrated Linnæus. 
Insects vary in their size, have six or more legs, with mostly a 
hard, and glossy skin, and respire through pores, placed along 
their sides. 
Their body comprehends a head, a trunk, an abdomen, and 
limbs. The head has no brain, and though without ears, they are, 
by some peculiar organization, susceptible of sounds ; in the same 
manner, though destitute of nostrils, they possess the sensation of 
smelling, as is evident from numbers of certain species of insects 
being found collected near, or upon an agreeable or foetid sub- 
stance. 
t 
Three hemispheric dots, or jtubercles, called Stemmata, or gems, 
appear on the upper part of the head, as in most of the Hymenop- 
tera, and others. 
The head in general is distinct from the trunk, to which it is at- 
tached by a slender joint. 
The greater part are furnished with two eyes, which are either 
simple or compound, i. e. composed of one, or more lenses. 
Nature has given them, in general, two moveable antennæ, 
formed of an indefinite number of articulations growing from their 
heads ; these are extremely tenacious of feeling, and their forms 
various. They are either, 
Setaceous , or gradually tapering towards their points. 
Filiform , or like a thread of equal thickness. 
Monilform, resenibling a necklace. 
Clav ated, or club-wise, growing thicker from the base to the point. 
