PHOEIDAE FKOM PARAGUAY. 
439 
Hypocera insperata n. sp. 
Male. Length 2*5 mm. Black, with hyaline wings ; tips of anterior 
femora, their tibiæ and tarsi brownish yellow. Head considerably flat¬ 
tened antero-posteriorly and concave behind above and on the sides. 
In anterior view the front is a little wider than high, and across the 
top is deeply transversely depressed and then semicircularly elevated 
into a sharp ridge on the occipital margin as in H. coronata Becker 
and B Johnsoni Brues ; seen from above the concave upper part is 
slightly over one-third as high as the convex front. Lower row of fron¬ 
tal bristles forming a strongly curved line with the median bristles 
lower, although all bristles in this row are equidistant from one another 
but closer to the eye margin. Next row of bristles equidistant, the late¬ 
ral ones close to the eye margin ; the row curving upward at the center 
where the bristles are quite close to the lower margin of the occipital 
depression. Ocelli forming a curved line, each on a tubercle which fits 
into an emargination of the frontal edge anterior to it ; lateral ocelli 
separated from the eye only by their own diameter. Occipital bristles 
as usual ; long, as are the others. Postocular cilia stout except at the 
extreme top. Antennæ with the third joint large, elongate pyriform, 
nearly as long as the width of the front, and very densely clothed 
with fusco-piceous hairs ; arista one-third longer than the third 
joint, moderately pubescent. Palpi very small, dorso-ventrally flattened, 
with large stout macrochætæ. Surface of front very sparsely but rather 
coarsely punctured, each puncture with a fine hair. Thorax pubescent, 
rather shining, with one pair of small dorsocentral macrochætæ. Scu- 
tellum transvere, flat, not pubescent; opaque, twice as wide as long 
but little curved on its posterior margin; at each side with a single 
long bristle about three times as long as the scutellum. Abdomen 
subshining, its surface bare except along the sides where there is a 
rather dense band of bristly hairs, weaker posteriorly. Second segment 
greatly elongated, at the middle nearly half as long as wide, its poste¬ 
rior part and the 3—5 th segments which are very short, quite distinctly 
fluted, caused by rounded longitudinal elevations and depressions alter¬ 
nating across the abdomen. Sixth segment much narrowed with the 
hypopygium projecting as a polished black swelling with a few hairs 
at its tip. Legs very stout, the posterior femora fully one-third as broad 
as long. Anterior tarsi not, or indistinctly enlarged or flattened, their 
tibiæ with a short, stout macrochæta at its basal third. Middle tibia 
with three macrochætæ, one externally at the basal fourth, one behind 
at the basal third, and one externally just before the tip in addition 
