392 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.41 



but entirely inclosed; postocellar furrow wanting; postocellar area 

 transverse sharply bounded laterally; postocellar line subequal with 

 the ocellocipital hne but much shorter than the ocellocular line; 

 antennae pilose, tapering, third joint distmctly longer than the fourth, 

 pedicellum much longer than broad; stigma angled near the base, 

 strongly tapering; transverse radius in apical third of cell; third 

 cubital cell shorter than the second, much broader apically; trans- 

 verse median in about the middle of the cell; lanceolate cell of the 

 hind wings sessile; hind basitarsis slightly longer than the following; 

 claws with a large basal tooth, at some angles appearing cleft; sheath 

 obliquely rounded apically. Ruf o-f erruginous ; antennae, head (ex- 

 cept pallid palpi), pro-pleurae and sternum, meso-and meta-pleurae 

 and sternum, posterior tibiae and tarsi black; intermediate tarsi 

 brownish; wings dusky hyaline, venation dark brown. 



Tacubaya, Mexico. One female collected by O. W. Barrett for 

 whom the species is named. Doctor Ashmead's manuscript name is 

 used for this species. 



Type.—Csit. No. 14000, U.S.N.M. 



STBOMBOCEBIDIA, new subgenus. 



Genotype. — Stromboceros (Stromhoceridea) pilosulus Rohwer. 

 The following species all have the pedicellum much longer than 

 broad. 



STROMBOCEROS (STROMBOCERIDEA) PILOSULUS, new species. 



Female. — Length 8 mm. Clypeus convex, apex nearly truncate; 

 supraclypeal area flat; supraclypeal foveas very shallow connected 

 with the antennal foveae which are small; middle fovea shallow sub- 

 quadrate, with a glabrous spot in the center; lateral foveae punctiform 

 a little above the level of the middle fovea ; antennal furrows incom- 

 plete present at intervals; ocellar basin with sharp ridges laterally 

 which meet above, open below ; a small fovea in front of the anterior 

 ocellus; postocellar area subquadrate, sharply defined laterally; post- 

 ocellar line shorter than the ocelloccipital and ocellocular lines ; front 

 below the ocelli roughened ; eyes nearly parallel ; antennae subpilose, 

 robust, apical joints flattened, tapering, third joint nearly as long as 

 the fourth and fifth, pedicellum much longer than broad; stigma 

 tapering; transverse radius near apex of cell; transverse median but 

 little beyond the middle; lanceolate cell of the hind wings sessile; 

 hind basitarsis slightly longer than the following; claws cleft, the 

 inner tooth shorter. Black; clypeus, labrum, first two antennal 

 joints, base of third, prothorax, tegulae, legs (except most of hind 

 femora and apex of hind tibiae) pale yellow; sides of mesoprescutum, 

 scutellum, upper part of mesoepisternum, three basal abdominal 

 segments reddish-yellow; wings yellowish-hyaline; costa and stigma 

 reddish, rest of the venation dark brown; front, clypeus, thorax and 

 legs with yellowish pile. 



