lS 
three segments gray pollinose, with reflecting black spots, 
second and third segments bearing marginal macrochetie, the 
fourth wholly covered; front pulvilli of male longer than the 
last tarsal joint; wings hyaline, third vein bearing three or four 
bristles at the base, fourth vein beyond the bend arcuate, calyp- 
teres white; length, 10mm. Pullman, Wash. Two males and 
three females bred by Prof. C. V. Piper from Schizura ipomee. 
Type No. 3614, U. 8. National Museum......... schizure nN. Sp. 
Genus MASICERA Macq. 
Masicera Macquart, Histoire Naturelle Insectes, Dipteres, Vol. II, p. 118; 1835. 
Ceromasia Rondani, Dipterologi Italicze Prodromus, Vol. I, p. 71; 1856. 
Dexodes Brauer and Bergenstamm, Zweif. Kais. Mus. Wien, IV, p. 87; 1889. 
Hemimasicera Brauer and Bergenstamm, loc. cit. 
The last-named authors place Dexodes and Hemimasicera as sub- 
genera of Ceromasia, and retain Masicera as a distinct genus.) A 
comparison of species placed by these authors in both of these so-called 
genera shows that they are too closely related to be separated into 
different genera: 
1. Thorax bearing four postsutural macrochiete, two or more on front 
side of each middle tibia near the middle, apex of abdomen 
I DGU GIS 5 es tigen GERMS Greig Seiten ee geet Re in era ey 2. 
Thorax bearing only three postsutural and three sternopleural 
macrochetie, second and third abdominal segments bearing 
discalas: well as mareinal,OMeS<. si s2.242ec-- 2 fede aes 4, 
2. Second and third segments of abdomen bearing discal macrochete, 
apical pair on scutellum nearly horizontal .............-.-. 3. 
Second and third segments destitute of discal macrochetie; black, 
the second antennal joint, palpi and usually the scutellum except 
the base, yellow; front of female one and one-fourth times as 
wide as either eye, two pairs of orbital bristles, hairs on sides of 
front short and sparse, frontal bristles descending to base of 
third antennal joint, cheeks over one-fourth as broad as the eye- 
height, facial ridges bristly on the lowest third to half, antennce 
five-sixths as long as the face, the third joint three times as long 
as the second, arista thickened on the basal three-fifths, the 
penultimate joint shorter than broad; thorax gray pollinose, 
marked with four black vittwe, four sternopleural macrochete, 
scutellum bearing two long and two short pairs of marginal 
ones, the apical pair almost erect; abdomen on last three seg- 
ments gray pollinose, their apices sometimes shining, the bristly 
hairs depressed; wings hyaline, third vein bearing two bristles 
at its base, hind crossvein and the fourth vein beyond the bend 
almost straight; calypteres white; length,5mm. Atlanta, Ga., 
1Zweif. Kais. Mus, Wien, VI, pp. 211, 212; 1893. 
3309——_8 
