1912] Brazilian Ichneumonide and Braconide 203 
Ophionellus Westw. Sides of head with a large tooth-like projection 
behind each eye; antennz long, setaceous 40-50 jointed, nearly twice 
as long as the head and thorax; costa in anterior wing without thicken- 
ing to form a stigma. 
In addition to these differences the radial cell is much 
larger in O. manni than in P. virginiensis. The hind tibia bear 
two apical spurs in each case, not one as is stated by Szépligeti, 
although there is only a single one on the middle tibia. 
Ophionellus manni sp. nov. 
Female. Length 20 mm. (extended). Black, the face, clypeus, 
cheeks and mandibles, except teeth, yellowish-white. Fore coxe and 
base of trochanters pale yellow, as are also the middle coxze beyond the 
middle; fore legs rufous, slightly darker toward the knees, and paler on 
the base of the tarsi; middle tarsi pale on base of first joint; last segment 
of abdomen testaceous below. Head smooth above on the sides but 
rugose medially; above the antennz with a deep depression which 
includes the median ocellus; face much narrowed below, only half as 
wide at the base of the eyes as at the antennez, its surface shining and 
finely punctulate. Eyes pubescent; oval, nearly twice as long as wide. 
Head behind shining, punctulate, densely griseous pubescent on and 
about the tooth-like projection behind the eye. Head behind highly 
polished, margined. Ocelli large, in an equilateral triangle. Antenne 
long and slender, 35-jointed; the first flagellar joint as long as the two 
following, rest gradually decreasing in length, those near the middle 
nearly three times as long as thick. Pronotum not visible from above, 
mesonotum much narrowed anteriorly. Its surface shining, reticulate, 
the carinee forming quite regular transverse rectangular areole poster- 
iorly. Scutellum sloping in a plane with the metathorax, flat, with a 
distinct large impression anteriorly. Metathorax long and strongly 
declivous, projecting considerably beyond the hind coxe and bifurcate 
at its tip where the abdominal petiole is inserted. It is densely covered 
with very short silvery pubescence, but shows a distinct median groove 
and a lateral carina extending for its entire length. Besides these the 
surface is distinctly, but not sharply reticulated, the areole rectangular 
and transverse above and more or less polygonal on the sides. Pleurze 
densely silvery like the metathorax except for the narrow smooth 
propleura and for a deep linear depression extending from the middle 
coxa to the tegula. This groove is coarsely reticulated. Abdomen 
very slender, the petiole as long as the entire length of the thorax above, 
swollen on the apical two fifths where the spiracles are placed; its 
surface smooth and shining, the remainder of the abdomen dull; second 
segment as long as the first; third, half as long; fourth almost equalling 
the second; fifth equalling the second; sixth, seventh and eight short. 
decreasing in length; ovipositor as long as the third segment. Wings 
perfectly hyaline; radial cell as long as the cubito-discoidal cell, the 
second section of the radius and the transverse cubitus interstitial; 
second discoidal cell as high as long above, narrowed behind; costa 
