Hymenopterenfauna von Paraguay. 187 
punctured, not advanced, very deeply but narrowly emarginate, the 
angles of the emargination produced into short acute spines, a pro- 
minent and acute tubercle overhanging the base of the emargination. 
Head as broad as the mesonotum, closely punetured, more shallowly 
on the vertex than on the front; the interantennal prominence rather 
broadly subtruncate at the apex, divided by a longitudinal sulcus 
which does not reach the anterior ocellus. Antennae as long as 
the thorax and median segment combined, the second joint of the 
flagellum a little shorter than the third, the apical joints feebly 
arcuate beneath. Pronotum smooth and shining, narrowed anteriorly, 
the anterior margin raised; mesonotum and mesopleurae sparsely 
punctured; scutellum and median segment shining, with a few small 
and shallow scattered punctures, the scutellum rounded at the apex; 
the median segment broader than long, with an obscure, impressed, 
longitudinal line in the middle. Abdomen sparsely but rather 
strongly punctured, nearly as broad as the thorax, scarcely longer 
than the head and thorax combined; the first segment narrow at 
the base, as long as its breadth at the apex, with a longitudinal 
sulcus from the base to beyond the middle, segments 2—5 with an 
impressed transverse line at the base; hypopygium very narrow, 
the sides parallel, projecting considerably beyond the dorsal segment 
and narrowly rounded at the apex. Second cubital cell as long as 
the third on the radial nervure, shorter on the cubital, receiving 
the first recurrent nervure at two-thirds from the base, the second 
recurrent received by the third cubital cell before one third from 
the base. 
Black; the mandibles, except the teeth, the clypeus, anterior 
margin of the face, inner orbit of the eyes, lower half of the outer 
orbit continued on the lateral and posterior margins of the head 
and narrowly interrupted on the vertex, the lobes of the inter- 
antennal prominence, a small spot between the ocelli, the anterior 
margin of the pronotum narrowly interrupted uniting with an arched 
band touching the posterior margin on the sides, the tegulae and 
a line above them, a large quadrate spot on the mesonotum, an 
oblique band on the mesopleurae, another horizontal one below it, 
a large spot before the intermediate coxae, a large semicircular 
spot on the scutellum and a smaller one at each of its anterior 
angles, the postscutellum, two broad, curved, longitudinal bands 
diverging posteriorly on the median segment, a transverse band 
broadly interrupted in the middle on dorsal abdominal segments 
13* 
