262 SMITHSONIAN MISCELLANEOUS COLLECTIONS [voL. 48 
cubital cell extremely narrow; the first recurrent nervure is received 
by the first cubital cell a little before its apex. 
Taken in December, 1904, on Petroselinum sativum at Villa En- 
carnacion. 
2. PROSOPIS POLYBIOIDES new species 
Female.—Length, 71% mm.; abdomen, 134 mm. wide; wings, 5%4 
mm.; antenne, 2mm.long. Black; the clypeus in the middle, a patch 
above it, the face at the sides of the clypeus, the inner orbits of the 
eyes extending upwards nearly to their summit, and the three basal 
joints of the antennz dark orange-red; the sides of the clypeus and 
the rest of the antennz, except the apex of the last joint which is 
ferrugineous, are fuscous;. the tubercles of the thorax and the an- 
terior margin of the pronotum are dark orange-red; the hind margins 
of the tubercles are followed by a semicircular pale yellow line; the 
scutellum and postscutellum are bright yellow. Abdomen: First 
segment on its apex with a narrow fascia of white hairs laterally; 
apical margin of the second segment and the rest of abdomen covered 
with very fine yellowish hairs, the segments 2-5 with their apical 
margins pale brown. Legs: The inner side of the anterior tibiz and 
the apical half of the anterior femora are honey-colored; the pos- 
terior tibiz at their base are pale yellow. Tegule brownish; wings 
hyaline, with a very dark fuscous cloud that occupies the apex of the 
median, the first cubital and the marginal cells, and extends to the 
apex of the wing. 
The head is densely covered with fine punctures; the mesonotum 
is coarsely punctured; the pleurz with scattered deeply impressed 
‘punctures; metathorax truncate, covered with pale hairs, the basal 
space coarsely rugose. Abdomen: First segment shining, finely 
punctured, the following segments opaque. Wings: The second 
cubital cell receives the first recurrent nervure just in the basal angle 
and the second recurrent nervure a little before its apex. 
This species has a striking resemblance to Polybia scutellaris 
White, but is, however, smaller. 
Taken December 30, in Villa Encarnacion, Paraguay. 
Notre :—The coloration of this species is variable. The extension 
of the orange red of the head is sometimes much reduced so that the 
base of the clypeus, the patch above it and the third joint of the 
antennz become fuscous. In one specimen the face at the sides of 
the clypeus is yellow. The same thing occurs with the last joint 
of abdomen. The margin of the pronotum has sometimes only two 
orange-red spots and even these sometimes disappear and the pro- 
_—— 
