SS ee ie 
pee 1S oe 
-a new Genus and eight new Species of Diptera. 507 
CHAETODIPLOSIS Kieffer, Bull. Soc. Metz, xxvii, p. 103 
(1913). 
C. gymnastica, sp.n. Plates XV, figs. 1-8; XVI, figs. 2-4. 
¢g. Eyes connected for a long distance on upper part of head. 
Antennae 2 + 12 jointed, exceedingly elongate (quite twice as long 
as the insect itself) and with all the flagellar joints binodose, the 
nodes connected by a long narrow neck and the joints by a slightly 
longer pedicel arising from the distal node. Basal node of each 
joint globular, distal node more elongate, rather wider at tip than 
at base and more or less constricted about the middle (more so 
towards end of antennae); basal node with a circlet of looped threads 
of almost equal length, distal node with two such circlets; basal node 
with a circlet of long bristly hairs, distal node with an apical circlet 
of similar hairs, and in addition (especially beneath) with numerous 
finer more curved hairs. Apical antennal joint with a terminal 
appendage of which the basal half is ovate, the apical half cylindrical. 
Face short, yellowish, bearing a few yellowish hairs on the lower 
part. Palpi four-jointed, yellow; basal joint short, second and 
third equal, and each about twice as long as the first, fourth joint 
the longest, slightly longer than the third. Proboscis somewhat 
prominent (in a prepared specimen about half as long as head is 
deep), paraglossae not at all pointed. Ocellar tubercle with two 
long curved bristles, and other curved bristles on occiput and lower 
part of head beneath neck as in Farquharsonia, but more yellowish. 
Thorax and abdomen yellowish, or brownish-yellow, with bristly 
hairs much as in Farquharsonia but not so dark in colour. Hypopyg- 
ium with only a very slight basal projection on inner side of basal 
segment of forceps, apical segment slender, bare, tip slightly hooked 
and apparently bifid. Upper anal lamella deeply triangularly 
emarginate, dividing it into two narrow pointed lobes; lower lamella 
closely adpressed to style, being also the same width as that organ 
but not quite so long and rounded at the tip. Legs long and slender, 
yellowish, but obscured especially on tibiae and tarsi by a clothing 
of adpressed, brownish, scale-like hairs. All femora with long 
yellowish hairs beneath. Ungues simple. Empodium very short. 
Wings longer than in Farquharsonia and all the veins yellowish ; 
auxiliary vein present; cubital vein strongly down-curved toward 
the tip and ending well below apex of wing. Halteres yellow, the 
knob slightly obscured by a clothing of adpressed, brownish, scale-like 
hairs. 
Q. Resembling the male, but antennae not half so long; the 
flagellar joints simple and cylindrical, connected by a short but 
