122 INSECTA. 
formed of a single scale or knot; antenne of the individuals men- 
tioned, thickest towards the ends; mandibles triangular, and the head 
nearly so, without any remarkable emargination at its posterior ex- 
tremity. 
F. contracta, Lat., Ibid., vil, 40. The males are nearly des- 
titute of eyes, and live under stones in trifling numbers. They 
are very small, black, and almost cylindrical; antennz and legs 
yellowish-brown. 
Opontromacuus, Lat. 
Where the pedicle of the abdomen ig,also formed of a single knot, 
but terminates superiorly in the form of a spine. The antenne of 
the males are very small and filiform; the head of these same indi- 
viduals forms along square, and is much emarginated posteriorly; 
their mandibles are long, narrow, parallel, and terminated by three 
teeth. 
All the species are foreign to Europe(1). 
Myrmica, Lat. 
Also furnished with a sting, but where the pedicle of the abdomen 
is formed of two knots. The antenne are exposed; the maxillary 
palpi long and composed of six joints; the mandibles are triangu- 
lar. Such is the ; 
F. rouge, Lat., Ibid.,x, 62. The males are reddish and finely 
granulated, with a glossy and smooth abdomen; a spine under 
the first knot of the pedicle; the third ring somewhat brown, 
It stings severely. In woods. 
Ecrron, Lat.(2) 
This subgenus consists of species entirely similar to the Myr- 
micz, with the exception of their mandibles, which are linear. 
Atta, Fab.(3) 
Only differing from Myrmica in the very short palpi; those of the 
(1) Lat., Gener. Crust. et Insect., IV, 128. 
(2) Lat., Ibid., 130. 
(3) GEcopome of the Nouv. Dict. d’Hist. Nat., 2d edition. 
