322 The Philippine Journal of Science 1921 
polished; pygidium sharply defined, two and one-half times as 
long as basal width, granular; second recurrent interstitial with 
the second intercubitus. Black; legs below coxee rufous (tarsi 
somewhat infuscated) ; wings smoky, venation black; face with 
dense, slightly golden, pubescence; thorax with sparse silvery 
pubescence. 
Type locality.—Baguio, Benguet, Luzon. Described from 
a single female received from C. F. Baker under his No. 7 993. 
Type.—Catalogue No. 22881, United States National Museum. 
Psen (Mimesa) melanosoma sp. Nov. 
Male.—Length, 9 millimeters. Clypeus convex, with close 
small punctures, the apical margin slightly rounded and with 
two rounded median teeth; face sculptured with transverse 
carina; frontal carina complete from anterior ocellus to between 
bases of antennz where it is more prominent; frons with dis- 
tinct, small, close punctures ; vertex (more broadly laterally) and 
posterior orbits shining ; ocelli in a low triangle; the postocellar 
and ocellocular lines subequal; scape rather short, the outer mar- 
gin nearly straight; flagellum rather long, slightly thickening 
apically, first joint one-third longer than second, the fifth and 
sixth joints irregularly rounded beneath; pronotum feebly 
carinate anteriorly, rounded laterally; parapsidal furrows 
completely wanting; scutum shining, with close, well-defined 
punctures; scutellum convex, more sparsely punctured. than 
the scutum; mesopleura and metapleura shining, impunctate; 
episternauli complete; inclosed area of propodeum broadly tri- 
angular in outline, closely rugose, medially with a diamond- 
shaped area; sides and posterior surface of propodeum coarsely 
reticulate, the posterior surface with a median carina; legs 
slender; abdomen shining impunctate; petiole cylindrical, as long 
as posterior leg to apex of femur; last tergite with sparse 
punctures; second cubital cell large, trapezoidal in outline, third 
transverse cubitus strongly bent at middle. Black; anterior 
legs below femora piceous; clypeus, face, frons below middle, 
and pronotum dorsally with appressed silvery pubescence, 
thorax with sparse silvery pubescence except on the scutum 
where it is blackish. Wings hyaline, iridescent; venation black. 
Type locality—Mount Maquiling, Laguna, Luzon. Described 
from two males (one type) received from C. F. Baker. 
Type.—Catalogue No. 22882, United States National Museum. 
Psen (Mimesa) aureohirta sp. Nov. 
Female.—Length, 8 millimeters. Clypeus convex medially, 
