538 
CHARLES T. BRUES. 
twice as far from the median ones as from the eye margin ; middle 
row straight, containing four equidistant bristles, the lateral ones close 
to the eye margin. Occipital row normal, inserted far below the upper 
margin of the head ; ocelli placed in a curved line, the lateral ones 
almost contiguous with the eye, and the lower margin of the occipital 
depression strongly trilobed by an emargination on each side between 
the ocelli, although the lateral ocelli are as far from the lower as from 
the upper margin of the depression. Surface of front shining, punctate 
and sparsely hairy below the depression, but the latter smooth and 
impunctate although bearing a few hairs medially. Third joint of an- 
tennæ elongate-pyriform, two-thirds as long as the width of the front ; 
brown, covered with a dense çoating of glistening brownish hair. Palpi 
very small, brownish yellow, with short stout bristles at their tips. 
Postocular cilia large, lengthened above, except at the extreme top. 
Cheeks each with a single long macrochæta. Dorsum of thorax quite 
shining, thinly covered with 
short black hairs, and with 
about six bristles on each 
side behind the middle. Pos¬ 
terior edge of mesonotum 
with one pair of dorso-cen- 
tral macrochætæ and also 
two pairs of weaker bristles 
between them ; scutellum flat, 
bare, slightly curved behind and about twice as broad as long ; with two 
marginal bristles. Pleuræ shining black, but not polished. Abdomen shi¬ 
ning black ; bare, except on the sides and apical part of fifth and sixth 
segments, which are clothed with minute bristly hairs. Second segment 
lengthened, half as long as wide, but shorter on the sides ; following of 
about equal length although the third is shortened medially by the convex 
margin of the second ; the posterior margins of the second to fifth quite 
distinctly fluted, caused by rounded, longitudinal elevations and depressions 
alternating across the abdomen. Hypopygium projecting as a small piceous 
spheroidal swelling clothed with black hairs on its apical half. Legs very 
stout, the anterior tarsi slightly widened apically and the posterior femora 
flattened, twice as long as broad. Anterior tibiæ with a single external 
bristle at the basal third, followed by a series of setulæ to the tip ; 
middle tibiæ with two bristles, one on the hind side at the basal third 
and the other before the middle on the outer side, in addition to a 
oristle outside before the tip and a long apical spur ; hind tibiæ each 
with a bristle just before the middle on the outer side and another 
