XXVIiL INTRODUCTION. 
large reticulated oval eyes; above, we 
commonly notice three more, very small, 
and placed so as to form a triangle. In 
the fore-part of the head are the anten- 
nz, and underneath the lower jaws the 
palpi. | 
The mandibles of the pate and the 
workers are of a horny structure, con- 
cave, curved, denticulated, moveable, 
and serve for several purposes: those of 
the males are very slender, terminate in 
a point, andare covered with hair. Besides 
these organs with which the mouth is 
externally furnished, we also remark an 
upper lip, slightly projecting, two infe- 
rior jaws, very small, which play from 
right to left, and a lower lip, hidden en- 
tirely underneath ; we are not yet agreed 
as to their composition. | 
Fabricius gives to Ants of all kinds, Si 
their. principal character, that of having 
a mouth destitute of a tongue (os absque 
Lingua); Latreille, on the contrary, 
grants them one, expressing it under this 
form (Langue en cuilleron entiére); ‘the 
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