1752 
DIPTERA OF AUSTRALIA, 
Head small, sub-globose, situated moderately deep in tbe 
thorax. Eyes reniform, emarginate at the insertion of the 
antennae, slightly separated on the front. Ocelli wanting. Palpi 
porrected, clothed with scales, almost the length of the proboscis 
in both sexes, five-jointed, first joint minute, second long and 
slender, third about twice the length of the second, fourth and 
fifth joints taken together about equal in length to the second, 
forming an elongated club in the Proboscis long, slender, 
densely clothed with scales, straight or bent downwaixls. 
Antennae porrected, a little shorter than the palpi in both 
sexes, 2- -F 12-jointed ; first joint of the scapus large and globose, 
second in the ^ rather longer and stouter than the first flagellar 
joint, in the 5 about twice the length and somewhat stouter than 
the first flagellar joint, cylindrical ; in the ^ the ten following 
flagellar joints short, fusiform, whorled at the middle with very 
long hairs, the penultimate joint greatly elongated beyond the 
whorl, terminal joint shorter, slender, like the continuation of the 
last, with a few moderately long hairs forming a. verticil at the 
base, both clothed with a short pubescence ; in the J all the 
flagellar joints cylindrical, of equal thickness, the first shorter 
than the rest, clothed with a dense minute pubescence and 
sparsely verticillate-pilose at the base. Clypeus produced, 
covering the base of the palpi. Thorax oblong, little arched ; 
scutellum small ; metathorax steep. Abdomen slender, lineai’, 
with eight segments in both sexes ; in the ^ terminating with 
holding-forceps ; the ovi[)ositor of the $ with short terminal 
lamellm. Legs very long and slender, the fore-pair the shortest ; 
very minutely spinulose ; metatarsal joint very long, in the 
hind-legs longer than the tibi^ ; ungues small, acute. Wings 
as long or longer than the abdomen, sub-elliptic, densely ciliated, 
the veins very densely covei’ed with slender, lanceolate scales ; 
incumbent in repose. Humeral cross-vein and sub-costal cross- 
vein present, the latter situated at or beyond the middle of 
the auxiliary vein. Marginal cross-vein present, the second 
longitudinal vein appearing before it in the first basal cell as 
a short piece of scaled vein not continued to the base of the 
