174 Mr. C. H. T. Towiisciul on Two new except Gli'j'icola and possibly Triinenopon there are six pairs of abJoiuinal spiracles, ami they o|)eii u|)oii either the tliird to the eighth or upon the second to the seventh segments — never upon the first segment *. Finally, neither the chrototaxy nor the coloration lend any supi ort to Kellogg's interpietation. XIII. — Two neto Genera of African ^fnseoidea. By CllARLKS Jl. T. ToWNSliNi), Bureau of Eiitouiologv, Washington, D.C. CONGOCURYSOSOMA, gen. nov. Genotype, Conrfochrysosovm snyderi, sp. n. Differs Irom Chrysomasicera as follows : — Female only : Eyes bare. Vertex about three-fourths width of one eye. Ocellar bristles very small, but distinct, short. Outer verticals scarcely developed. Second antennul joint elongate, the third only one and one-half times second. Arista shorter. Face rather flattened, epistoma quite prominent, vibrissa well above oral margin. Tarafacials bristly in middle. Four lateral pairs of sciitellar macrochaitae ; a short median jiair on first abdominal segment, no discals on internu-diate segments. Hind tibiae short-ciliate, with a longer bristle below middle. Congochrysosoma snyderi, sp. n. Length of body ll'O mm., of wing 0*5 mm. One female, Luebo, Congo (/>. IF. Snyder). Face dull silvery, the parafacials with a faint greenish lustre. Cheeks silvery, with a bronze lustre. Parafrontals greenish bronze. Frontalia and anteni ae blackish, the second antennal joint brown. Palpi fulvous, infuscate at base. Mesoscutum and arcuate area on base of scutellum greenish bronze ; five vittfc showing, widening and narrowing with the incidence of light, the middle one disappearing in front of suture in some lights. Pleurae, humeri, and outer aspect of front femora rather silvery. Abdomen and very broad margin of scutellum bright frosted green, the first segment and rather irregular hind borders of others black. * See Launcelot Ilamson, ' rar;uitolog-v,' vol. viii. no. ], June 2.5th, 1015, p. 101.