Genus Trichopeza Rond.

The following species, which I have placed in Trichopeza for the time being, does not altogether agree with the characters given for the genus. The chief points of difference are: Third joint of antennae elongate and clavate with a somewhat shorter articulated style; eyes not touching below antennae; acrostichal bristles uniserial anterior to the transverse suture but biserial posterior to this; the tibiae have a stout apical spine.

T. longipennae n. sp.

Head cinereous; eyes minutely hairy, slightly emarginate at antennae, approximated slightly on middle of front, which is short, without vestiture but with an indistinct brownish transverse median band. Ocellar triangle situated a little forward of middle of top of head, owing to encroaching occiput (fig. 20); a pair of conspicuous ocellar bristles, between which run two rows of small bristles to posterior margin of triangle (fig. 22). Antennae longer than width of head, above middle line of which they are inserted and closely approximated (fig. 20); cinereous and minutely pubescent; first joint long, with bristles above; second joint short and globular, bristly above and below; third joint considerably longer than first and second together, clavate, being abruptly constricted in lower margin toward apex; flagellum three-fifths as long as third joint (fig. 21).

Face cinereous, with pair of delicate bristles in middle (fig. 20); cheeks narrow, cinereous, eyes descending close to oral margin; a deep furrow at lower eye-margin toward posterior oral angle, which bears long stiff greyish hairs extending on to lower occiput. Palpi greyish-black, densely clothed with greyish pubescence and with long rigid greyish hairs. Proboscis not quite length of head-height, stout, and ending in an acute recurved point. Occiput cinereous, convex, bristly above, hairy below, chaetotaxy arranged as in fig. 22.

Dorsum of thorax somewhat humped, but flattened before scutellum; black-margined, with cinereous and with medium grey stripe which broadens over the flattened area posteriorly; on each side of stripe is a narrow indistinct pale one, seen only in certain lights; alar regions reddish-brown in some lights, with a greyish stripe running to scutellar suture. Chaetotaxy distinct and arranged as in fig. 23; pleurae cinereous and bare.

Wings (fig. 24) much longer than body and projecting far beyond abdomen, slightly tinged with brown; costa distinctly developed around posterior margin; numerous long and strong costal bristles at articulation; anal angle not strongly developed; vein Sc evanescent before reaching costa; R₄ angulated and with a short stump in wing of male (fig. 24a); in female R₄ is strongly rounded after leaving R₅; Cu₂ and 1st A confluent, forming a loop. Halteres elongate, stalks tawny, large heads brownish.

Legs bristly, long and slender, cinereous, but tarsi merging to black; anterior coxae longer than posterior, on anterior surface clothed with yellowish bristle - like hairs and numerous stout black spines (fig. 25). Femora, tibiae, and tarsi with numerous long hair-like bristles; tibiae with stout apical spine; anterior protarsi (fig. 26) with row of widely separated short and stout spines beneath; anterior metatarsi flattened and broadened anteriorly.

Abdomen cinereous-black, sparsely clothed with long hair-like bristles, denser along posterior margin of each segment, on each side of which is a black circular depression. Male genitalia black, projecting, structure obscure (fig. 27); apex of female abdomen ending in pair of broad lamellae (fig. 28).