40 PROCEEDINGS OF THE NATIONAL MUSEUM. vol.51. 



slightly longer than the two fimicle joints which are subequal, each a 

 third longer than wide and a little longer than the pedicel. Man- 

 dibles tridentate, tooth 3 smallest, 1 and 2 acute, subequal. Body 

 shmy, the scaly sculpture dehcate and inconspicuous. Propodeum 

 plane. Postmarginal vem shorter than the stigmal. Parapsidal fur- 

 rows complete, sutured cephalad only. 



From one female captured by sweephig in tlic forest. District of 

 Columbia, May 10, 1915. 



T}/2)e.— Cut. No. 19583, U.S.N .M., the female on a tag, the head on 

 a slide. 



RHICNOPELTOMYIA SCUTELLATA, new species. 



Female. — Length, 2 mm. Rather stout. 



Dark purphsh black, the wings hyaline, the venation yellow, the 

 stigmal vein dusky. Trochanters, knees, tibiae, tarsi, and scutellum 

 white, the median line of the scutellum broadly concolorous, this line 

 broadening gradually distad, spreadmg around the apex narrowly, 

 thus mushroom-shaped; the disto-lateral bristle is a httle separated 

 from this hne and are the only two bristles present on the scutellum, 

 the latter with a very short median groove at base. Parapsidal fur- 

 rows far cephalad only. Abdomen stout, subglobular. Body very 

 finely scaly, the prop'odeum plane, subglabrous. Postmarginal vein 

 shghtly shorter than the stigmal, the margmal much longer than the 

 broken submarginal. Cephahc tibial spur not formmg a strigil. 

 Third ring-joint largest. Pedicel subequal to club 2; club 3 conical, 

 four times longer than its short, distinct terminal spine, subequal to 

 funicle 2; funicle 1 two-thirds longer than wide, somewhat longer 

 than the pedicel. Mandibles with three large, acute teeth, the third 

 smallest; dusky, red at tip. 



From one female on a tag captured by sweeping in the forest, 

 District of Columbia, May 10, 1915. 



Type. — Cat. No. 19584, U.S.N .M., the above specimen, the head on 

 a slide. 



RHICNOPELTOMYIA VIRIDISCUTELLUM, new species. 



Female. — Length, 2.05 mm. 



Canary yellow, the wings hyaline, the venation yellow; ocellar area, 

 a large quadrate area on cephahc scutum (cephahc thhd or somewhat 

 more but not reaching the abbreviated parapsidal furrows), scutellum, 

 postscutellum, axillae hghtly meso-cephalad, meson of propodeum 

 not very broadly, a margmal spot on abdomen at base and three mod- 

 erate cross stripes on middle abdomen, the first at apex of proximal 

 fourth, the third somewhat distad of the middle, aU three thickened 

 at the meson and there more or less confluent, dark metaUic green. 

 Tip of ovipositor valves black. Body finely scaly. Postmarginal 

 vein somewhat longer than the stigmal. Propodeum noncarmate. 



