216 INSECTA. 
ous, and composed of thirteen or fourteen joints; the mandibles den- 
tated on the inner side; the maxillary palpi composed of six joints and, 
and the labials of four. The abdomen is implanted on the thorax, 
in several under the scutellum, and has an ovipositor usually salient 
and formed of three filaments. 
This tribe appears to form but the single genus 
Fenvus. 
Sometimes the ovipositor is concealed, or but very slightly salient, 
and resembles a little sting. The ligula is trifid, a character which 
approximates these Insects to the preceding Hymenoptera. 
Evyania, fab.—Spuex, Lin., 
Where the antenne are geniculate, and the very “small, compressed, 
triangular, or ovoid abdomen, abruptly pediculated at its origin, is 
inserted into the Fae ots and superior extremity of the thorax, under 
the scutellum * 
Pexercinus, Lat. Fab., 
Where the abdomen, as in the following subgenus, inserted much 
lower, a little above the orign of the posterior legs, is elongated, 
sometimes filiform, very long and arcuated, and sometimes gradually 
narrowed towards its base, and terminated like a club. The posterior 
tibize are inflated. ‘The antenne are straight and very small 7. 
Sometimes the ovipositor projects greatly, and is formed of three 
distinct and equal threads. 
In some, the abdomen and posterior tibiz are clavate; the angus 
are filiform, and the ligula is entire or simply emarginated. Such 
is Foenus proper, or 
Fenus, ab.—Icuneumon, Lin.t 
The abdomen of the others is compressed, ellipsoidal, or falciform, 
and all their tibize are slender. The antennz are cetaceous. 
Auuxacus, Jur. Spin., 
Where the abdomen is ellipsoidal §. 
Paxytioma, Bréb., 
Where the abdomen is falciform ||. 
In the second tribe, that of the Ic#yzumonipEs, the wings are also 
veined, the superior ones always presenting complete or closed cells 
in their disk. The abdomen originates between the two® posterior 
* See Fab., Jur., Lat., Gen. Crust. et Insect., III, p. 250. 
} See the works already quoted, and Encyc. Méthod., article Pelecine. 
{See Jurine, Hymenopt.; Lat., Gen. Cruet. et Insect., 1V, 3; and Panzer on the 
Hymenoptera. See also Spinol., Insect Ligur. 
§ Idem. 
|| See the Nouv. Dict. d’Hist. Nat. 2d edit.; a subgenus formed on a single spe- 
Cies closely allied to the Ophion, Fab. 
