44 PROCEEDINGS OF THE NATIONAL MUSEUM. VoL. 62. 
Florida specimens sent by him for examination answering the de- 
scription very well. 
Type locality—Savannah, Georgia. 
Type.—Presumably in the Westermann collection in the Zoological 
Museum, Copenhagen. 
Male.—Length 7 mm. General body color black. The frontal 
triangle black in the center, silvery on the sides, flat and with a few 
short, black hairs. Face silvery pollinose; a black spot on the cheeks 
below the eye, clothed with short black pile; palpi brown, with white 
pile. Occiput gray pollinose above, silvery white below, with white 
pile; post-ocular bristles black. Antennae black, rather short and 
thick (fig. 85); first jomt with black bristles; third joint about as 
long as the first and second and wider in the middle, the arista as 
long as the second joint. 
Thorax black, shining on the sides, the mesonotum gray pollinose, 
with a faint indication of two white vittae and a darker central stripe. 
Dorsum with short tomentumlike golden yellow pile in the central 
part and erect black hairs, the margins with white pile. Scutellum 
black, gray pollinose and white pilose, with four black bristles on 
the margin. Pleura silvery gray pollinose and white pilose. Knob 
of the halteres blackish, the stem brown. 
Abdomen black, largely silvery and gray pollinose and white pilose; 
sides of segments two, three, and four with a large shining black spot 
at base, the fifth segment with a smaller spot; the fifth, sixth, and 
seventh segments together about equal to the third. Dorsum of 
abdomen in certain lights intensely silvery. Genitalia reddish and 
black with mixed black and white hairs, the structure much the same 
as in haemorrhoidalis. Legs brownish yellow, darker at the ends of 
tars!; silvery white reclinate pile on the femora, in addition to the 
erect white pile on the two front pair. Wings gray hyaline with a 
yellowish tinge; veins brown and yellow, the stigma pale brown, and 
a trace of a brown spot at the outer end of cell first M-2; cell M-3 
closed and petiolate. (Fig. 75.) 
Female.—Very nearly like the male, with the usual differences in 
this group. Frons and vertex, including the ocellar tubercle, shining 
black; the lower corners of frons silvery pollinose as in haemorrhoi- 
dalis. Bristles and hairs of antennae short and black. 
Pile of the thorax much shorter than in the male, reclinate golden 
yellow and short erect black; a faint darker median stripe and an 
indication of two white vittae as in the male. Scutellum short 
reclinate golden yellow pilose. 
Abdomen largely shining black; first segment faintly gray pollinose, 
with short erect white pile; second and third segments with distinct 
white posterior margins, bordered narrowly above by silvery gray 
pollen on which the pile is short, white, and reclinate; the rest of the 
