446 Transactions. 
Genus TgicHorEZA Rond. 
The following species, which I have placed in T'chopeza for the time 
gree 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 
ut 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 
. 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. 
celput emereous, 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, 
Wings (fig. 24) much lon peti beyond 
; : ger than body and projecting far Dey 
abdomen, slightly tinged with brown: costa distinctly developed around 
costa ; R, angulated and with a short stump in wing of male (fig. 4a); 
in female R, is strongly rounded after leaving R, ; Cu, and Ist A confluent, 
forming а loop. Halteres elongate, stalks tawny, large heads brownish. 
Abdomen cinereous-black, sparsely clothed with long hair-like bristles, ` 
denser along posterior margin of each segment, on each side of which 1s а 
f : 2 Male genitalia black, projecting, structure obscure 
(fig. 27) ; apex of female abdomen ending in pair of broad lamellae (fig. 28). 
