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 coxae 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. 7993. 
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 antennse 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, 
