1734 
DIPTERA OF AUSTRALIA, 
ovipositor deep brown. Coxae bi’own or fuscous, with white scales 
and pale yellow hairs. Femora in the ^ covered with violet-black 
scales, more or less spotted with pale yellowish or whitish scales, 
especially at the base and beneath, and slightly tipped with yellow 
or white at the apex; in the ^ usually pale yellowish or whitish for 
§ of their length, violet-black for the remaining third, and more or 
less so along the upper side, usually with a distinct ring of white 
before the extremity, the extreme tip and genu always slightly 
yellow or white. Tibife and tarsi violet-black or violet-brown, the 
former fringed with erect hairs, the latter in the fore- and inter- 
mediate-legs with the first three joints very slightly ringed with 
white at the base, in the hind-legs the first four, and in the ^ some- 
times all the joints, with a broad white ring at the base. In the 
hind-legs the tibiie about i longer than the metatarsi. Wings the 
length of the abdomen in the longer and wider in the 5, hyaline, 
the veins covered with dark fuscous-brown scales, cilia greyish. 
Auxiliary vein reaching the border opposite the tip of the posterior 
branch of the fork of the fifth longitudinal vein ; middle cross- 
vein rather longer than the posterior cros.s-vein, situated beyond 
the latter a distance equal to its length ; first sub-marginal cell 
rather longer and much narrower than the second posterior cell, 
its base lying somewhat beyond that of the latter ; anterior 
branch of the fifth longitudinal vein as in the last species. 
New Holland, eastern coast (Macquart) ; Sydney 
(Thomson), common, also Woronora and Blue Mountains, 
N.S.W. (Mastei's and Skuse). October to January. 
Ohs . — This species seems variable in the intensity of its 
colouring, while in old specimens the five thoracic lines are 
frequently not distinguishable. The above description is drawn 
from a large series of fresh specimens. I have no doubt in my 
mind about the identification and synonymy of the insect. 
Macquart points out that this species approaches C. annulatus. 
It differs principally, however, in the markings of the thorax, in 
the lack of spots on the wings, and in its smaller size. Thomson 
