SCHROTTKY ] SOUTH AMERICAN HYMENOPTERA 269 
current nervure just before the second transverse cubitus or the angle 
of the second cubital cell. 
Male.—Length, 4 mm.; abdomen, 4% mm. wide; wing, 34% mm.; 
antenne, 2mm. long. Black; the mandibles, labrum, clypeus, except 
a very fine black line on each side, the face on each side of the 
clypeus, the inner orbits of the eyes, the tubercles of the thorax, the 
apex of the anterior femora, the anterior tibiz in front, and the 
middle and hind tibiz at base, are yellow; the basal joint of the 
antennz is black, the second joint yellowish, the rest of the antennz 
beneath fulvous but above fuscous; the abdomen is black with the 
apex ferrugineous. 
Named after “ Itaptia,” the ancient Guarané-name of Villa Encar- 
nacion. Male and female taken in copula on January 26, 1905. A 
common species during December and January. 
The female has the same coloring as variolosa Sm. but differs from 
it by its smaller size, less distinctly sculptured thorax and abdomen 
and by the cheeks not being flat. 
[ Distinguished from P. palmaris, Vachal, by the apparently weaker 
sculpture of the thorax, especially the metathorax, the basal area of 
which is “almost reticulated” in palmaris——T. D. A. C.] 
10. PROSOPIS PARAGUAYENSIS new species 
Female.—Length, 5 mm.; abdomen, I mm. wide; wings, 334 mm. ; 
antenne, 134 mm. long. Black; the mandibles, the labrum, the 
clypeus, the antennz, the legs and the greater part of the first 
abdominal segment, are ferrugineous; the face on each side of the 
clypeus, the inner orbits of the eyes to three-quarters of their height, 
the tubercles of the thorax, the tegulz in front and the extreme base 
of posterior tibiz, are yellow; rest of the tegule brown. Wings 
hyaline, splendidly iridescent, with fuscous nervures. 
Head densely punctured, the mesonotum, scutellum and pleure 
covered with fine, not very dense, punctures; metanotum rounded; 
there is no sharp division between the horizontal and vertical parts, 
while one cannot speak of a basal area, it being apparently absent, 
whole metathorax being uniformly covered with very dense rugose 
punctures. The abdomen is highly polished, the first segment 
covered with very fine, scattered punctures. The first recurrent ner- 
vure is received by the first cubital cell a little before its apex; the 
second recurrent nervure is almost interstitial with the second trans- 
verse cubitus. 
Male.—Length, 4 mm.; abdomen, 34 mm. wide; wing, 3 mm.; 
