394 PROCEEDINGS OP THE NATIONAL MUSEUM. vol.41. 



Trinidad,. West Indies. One male collected by F. W. Urich, July, 

 1899. Doctor Ashmead's manuscript name is used for this species. 

 Named for the collector. 



Type.— Cat. No. 14003, U.S.N.M. 



STROMBOCEROS (STROMBOCERIDEA) PALLIDICORNIS, new species. 



Apical joints of antennae, thorax and abdomen marked with yellow. 



Female. — Length 6 mm. Clypeus gently, arcuately emarginate; 

 middle and frontal foveae small, shallow, subcircular in outline; anten- 

 nal furrows very poorly defined, incomplete; ocellar basin large, 

 extending almost to the bases of antennae, walls rounded, stronger 

 below; postocellar line distinctly shorter than the ocellocular line 

 and but little shorter than the ocelloccipital line; antenna? slender, 

 pilose, wanting beyond the sixth joint, third and fourth joints sub- 

 equal; stigma angulate near base, tapering to the apex; second 

 cubital cell slightly longer than the third; transverse median vein 

 slightly beyond the middle of cell; tibiae and tarsi pilose; calcaria 

 short and stout; sheath slender, straight above, obliquely truncate 

 at apex, gradualh^^ broadening basally. Black and yellow; the fol- 

 lowing parts black; head (except clypeus, labrum, mandibles apicies 

 of later piceous), third and base of fourth antennal joints, propleurse, 

 middle of mesoprescutum, mesoscutum, meso- and metapleurae and 

 sturnum (except a large spot on mesoepisturnum), posterior legs 

 below trochanters (except apicies of femora), spot on apical dorsal 

 segments and sheath black; wings dusky hyaline; venation black. 

 Intermediate tarsi are sometimes dusky. 



Medan, Sumatra. Six females collected by L. B. du Bussey. 



Type— C&t. No. 14004, U.S.N.M. 



ETTSTROMBOCEROS, new subgenus. 

 Genotype. — Stromhoceros (Eustromboceros) melanopterus Rohwer. 



* PEDICELLUM WIDER THAN LONG. 

 STROMBOCEROS (EUSTROMBOCEROS) MELANOPTERUS, new species. 



Rufo-ferruginous marked with black; hind tibiae and tarsi black. 



Female. — Length, 8.5 mm. Clypeus truncate; supraclypeal foveae 

 deep, circular; antennal foveae poorly defined below, V-shaped above; 

 ocellar basin bounded by line-like carina wliich extends between the 

 bases of antennae, making the basin diamond shape; antennal furrows 

 wanting; a depressed area outside each lateral ocellus; postocellar 

 furrow angular; postocellar area transverse; postocellar line shorter 

 than the ocelloccipital and much shorter than the ocellocular; antennae 

 subpilose, stout, filiform, third joint but little longer than the fourth 

 pedicellum, much broader than long; stigma hardly tapering, apex 

 obliquely truncate; transverse radius but a little distance beyond 

 middle of cell; transverse median less than its length from apex of 

 cell; lanceolate cell of liind wings sessile; liind basitarsis subequal with 



