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. 



