18, 8 Rohwer: New Philippine Wasps 317 
line which follows the eye margins; frons and vertex shining and 
sparsely punctured; on the frons near the top of the eye is an 
elongate, shining tubercle; intraocellar area and behind a narrow 
curved depressed line; postocellar line slightly longer than the 
ocellocular line; antennz submoniliform, the third joint slightly 
longer than the fourth; anterior dorsal margin of the pronotum 
carinate and feebly dentate laterally; scutum shining, with well- 
separated, distinct punctures; parapsidal furrows present ante- 
riorly; scutellum and metanotum punctured like the scutum; 
propodeum coarsely reticulate, the median impressed line of 
uniform width; mesopleura shining, almost impunctate, the 
sutures feebly foveolate; longer calcarium of the posterior tibia 
shorter than the hind basitarsus; petiole cylindrical, fully as 
long as hind trochanter and femur; abdomen shining; first 
recurrent joining first cubital well before the apex. Black; 
mandibles except apices, spot on tubercles, scape beneath, and 
four anterior tibiz and tarsi yellow; rather sparsely clothed with 
silvery hair; wings hyaline, iridescent; venation black. 
Type locality—Mount Maquiling, Laguna, Luzon. Described 
from one male received from C. F. Baker. 
Type.—Catalogue No. 22843, United States National Museum. 
d, Abdomen reddish, thorax black without yellow markings. 
Diodontus philippinensis sp. nov. 
Judging from the description this species resembles Psen rufi- 
ventris Cameron, but may be separated from that species by the 
different sculpture on the front, different propodeum,” and 
shorter petiole. 
Female.—Length, 8 millimeters. Clypeus convex, the apical 
margin truncate, the surface irregularly punctured; face finely 
punctured; a strong carina, between the bases of antenna, 
extends ventrally until it unites with the complete transverse 
facial carina, and dorsally to the anterior ocellus (not so prom- 
inent above the antenne); frons, vertex, and posterior orbits 
smooth, shining; between ocelli and eye an elongate raised area: 
postocellar line slightly shorter than the ocellocular line; antenne 
slightly thickening apically, scape curved, the third joint slightly 
longer than the fourth; pronotum carinate anteriorly, anterior 
lateral angles sharp; mesoscutum with sparse, small punctures; 
parapsidal furrows weak, extending about half the length of the 
scutum; mesepisternum smooth, shining; scutellum sculptured 
like the scutum; inclosed area on propodeum broadly triangular, 
sharply defined posteriorly by a carina and with longitudinal 
rug; sides and posterior surface reticulate, posterior surface 
176938—_—_7 : 
