Dec, 1919.] Bequaert: New Nemestrinid Fly. 303 



cence at the under side is moderately long, scattered, appressed, yellowish- 

 gray. The segments behind the fourth which constitute the rectractile ovi- 

 positor, bear numerous black, erect hairs. A dense grayish-white bloom covers 

 the entire under side of the abdomen and forms on the dorsal face four 

 sharply defined fasciae, separated from one another by slightly broader dark 

 transverse bands; these dark bands are covered with a feeble brownish bloom 

 which is readily rubbed, so that the bands arc more or less shining. The first 

 tergite is yellowish pollinose with a narrow apical brown band. The second 

 tergite has four fasciae, alternately pale and brown ; the basal band is quite 

 white and of about the same width throughout, while the median fascia is 

 more grayish and slightly widened toward the sides ; the apical brown band 

 is broader than any of the other three fasciae. On the third and fourth tergites 

 the pale band is grayish-white, slightly broader than the pale fasciae of tergite 

 two and situated close to the basal margin, the basal brown band being very 

 narrow and furthermore often partly retracted beneath the apical margin of 

 the preceding segment. The ovipositor is brownish pruinose, except toward 

 the base of its first tergite which is in part feebly grayish pollinose. Legs 

 densely covered with short, ochraceous hairs, those on the hind tibiae and hind 

 tarsi black. 



Head large, slightly broader than the thorax, a little higher than broad 

 seen in front, almost hemispherical in profile. Front widest above the antennae, 

 the inner orbits very feebly convergent toward the vertex and a little more so 

 toward the oral depression ; at the vertex the front is about one third of the 

 total length of each eye. Ocellar protuberance elongate, very large, deeply 

 separated from the inner orbits by a lateral groove, confluent with the front 

 below. Posterior ocelli much closer to each other than to the anterior ocellus 

 which is slightly smaller. Eyes bare. Antennae short, small, placed closer to 

 the inner orbits than to each other; their basal joint subcylindrical, gradually 

 but feebly widened from its base to its straightly truncate apex, as long as 

 the two following joints together; second joint transverse, subtruncate at base 

 and apex, about one and a half times as thick as long; third joint flattened, 

 pear-shaped, one and one half times the length of the second, almost as broad 

 at the base as long, gradually attenuated toward its obtuse apex, which bears 

 the style. Style about as long as the entire antenna, distinctly three-jointed ; 

 its two basal joints short and thick, together about the length of the second 

 antennal joint; the basal joint much the shortest. Front distinctly swollen 

 below, gradually sloping toward the vertex, much more abruptly so toward the 

 antennae. Face with a feeble median protuberance above the oral margin, 

 separated from the lower inner orbits by two deep grooves which run nearly to 

 the base of the antennae and in which the palpi are partly concealed. Pro- 

 boscis short and thick, with soft, broad, fleshy labella, usually retracted within 

 a deep excavation of the lower half of the face. Palpi very long, slender 

 throughout, rather suddenly attenuated and pointed at their apex, two-jointed, 

 the basal joint extremely short. Body rather broad and flattened. Dorsum 

 of the thorax about as broad as long; the transverse suture feebly marked on 



