270 SMITHSONIAN MISCELLANEOUS COLLECTIONS [voL. 48 
antenne, 144 mm. long. Black; the mandibles, the labrum, the 
clypeus, a quadrate spot above it, the face at the sides of the clypeus, 
the inner orbits of the eyes, and the tubercles of the thorax, are 
yellow ; the antennz are fulvous beneath, a little darker above; the 
legs are fulvous, but with a large dark brown spot on the posterior 
femora and tibiz. The first abdominal segment beneath is totally, 
and above on the apical margin, rufous. The sculpture, the neura- 
tion of the wings, etc., as in the female. 
Females, December 27 and January 25. 
Males, December 17, 25, 26, 27, 29, 1904; January 12 and 26, 
_ 1905. 
A rather common species. 
Its systematical position is near amazgonica Gribodo. 
11. PROSOPIS COCKERELLI new species 
Male—Length, 6 mm.; abdomen, 1% mm. wide; wing, 4% mm.; 
antenne, 24% mm. long. Black; the clypeus, a pentagonal spot above 
it, the face on each side of the clypeus, the inner orbits of the eyes, 
the tubercles of the thorax, the anterior tibize in front, and the pos- 
terior tibiz at extreme base, are yellow; the mandibles, the labrum, 
and the antenne beneath are ferrugineous; the antennz above are 
dark fuscous; the tarsi, the tegule and the apical margins of the 
abdominal segments are brown. Wings hyaline, with a fuscous cloud 
that occupies the whole radial cell, and extending beyond it towards 
the apex of the wing, enclosing first cubital and the apex of the 
median cell; the nervures are black. 
Head densely covered with fine punctures; the mesonotum and 
the scutellum with dense strong and deep punctures; those on the 
pleurz are also deep and strong but scattered; the metathorax is 
truncate, the basal area divided by a broad, longitudinal furrow, with 
a few strong irregular punctures, and at each side with an oblique 
furrow; the truncation is rugose but shining; the first abdominal 
segment is strongly punctured, shining, the second segment near its 
base with a deep transverse depression, from whence to the apical 
margin covered with very fine, almost inconspicuous punctures; seg- 
ments 3-5 are thinly covered with very fine yellowish hairs. Both 
recurrent nervures almost interstitial. 
Taken at Villa Encarnacion, January 4, 1905. 
Named in honor of Prof. T. D. A. Cockerell, of Boulder, Colo. 
