40 Myron Harmon Swenk 
tures, dull, its pubescence short, sparse, and pale. Sides of vertex densely, 
finely, indistinctly punctured, the interocellular tuft and occipital fringe 
sparse, black with some pale hairs intermixed. Cheeks with sparse, shal- 
low punctures and short, thin, white hair. Antennae short, black, joint 
3—=4 or 5, flagellar joints three-fourths as long as wide. Malar space about 
one-half as long as wide. Prothoracic spine very short, blunt. Punctures 
of mesothorax fairly large, rounded and distinct, very close along anterior 
margin, medially and posteriorly widely separated and less distinct on a 
shining surface, this shading further into a large, polished, impunctate spot 
on‘the disk. Mesopleura with distinct, well-separated punctures. Scutellum 
with a wide basal, polished, impunctate space followed by a densely, stri- 
ately punctured surface. Postscutellum minutely roughened, opaque. Su- 
perior face of metathorax poorly defined, its pits rather irregular, longer 
than broad. Enclosure funnel-shaped, the bowl coarsely irregularly rugose, 
the neck concave, smooth, and somewhat shining. Sides of posterior face 
subopaque, densely shallowly rugose, tuberculate. Tegulae large, shining, 
black. Wings clouded by a moderate infuscation, nervures and: stigma 
black. Thoracic dorsum with sparse, erect, black pubescence mixed with 
pale hairs, densest on scutellum and thinnest on disk. Postscutellum, meta- 
thorax, pleura, and below with thin grayish white pubescence. Legs mod- 
erately stout, their pubescence thin and whitish, the basal joint of the hind 
tarsi two and one-half times as long as broad, middle joints one and one- 
half times as long as broad. Anterior coxae with very short, inconspicu- 
ous, blunt spines. Tibial spurs dark testaceous, not pectinate. Claws ru- 
fous, deeply medially toothed. Abdomen stout, suboval, almost bare, very 
polished, two basal segments practically impunctate, following segments 
very minutely and indistinctly punctured. Apical margins of segments not 
at all depressed, the fasciae on 2-5 reduced to mere fringes, easily worn off. 
The extreme lateral base of segment 1 has some sparse white hair, and the 
disks of segments 3-6 have scattered, short, fuscous hairs. 
3. Length 8 mm. Differs from the 2 as follows: Pubescence of vertex 
and thoracic dorsum largely pale, well mixed with black on scutellum; 
clypeus basally finely, closely punctured, apically polished and impunctate; 
antennae with flagellum brownish beneath, joint 3 shorter than 4 or 5, the 
proportion being 4:5:5; the median flagellar joints one and one-fifth times 
as long as broad; malar space five-sixths as long as broad; punctures of 
mesopleura sparse, shallow, and indistinct; basal joint of hind tarsi four 
times as long as broad, median joints one and two-thirds times as long as 
broad; basal two abdominal segments scatteringly, feebly punctured, 2-5 
with more decided apical fringes, the segments abundantly provided with 
long, erect, pale hairs. ' 
Genitalia—Stipes notched, its apex stout, rather large, ovoid, and bear- 
ing long, dense hairs; sagittal rods with their basal dilations elongate 
acuminate and converging apically, the distal wings divergent and medially 
82 
