1216 
DIPTEEA OF AUSTRALIA, 
latter with a shorter petiole ; tips of the third longitudinal fork 
somewhat divergent ; second posterior cell short, its base situated 
much beyond the base of the second sub-marginal cell ; the 
branches of the fourth longitudinal fork divergent ; fifth longi- 
tudinal vein long, incomplete ; sixth longitudinal stout and long. 
Ohs . — This genus evidently should come between Mycetophila 
Meig., and Dynatosoma, Winn. 
169. BRACnTDICRANIA PULLICAUDA, Sp.n. 
(J. — Length of antenna 0-050 inch ... 1-27 millimetres. 
Expanse of wings 0-140 x 0-050 ... 3-55 x 1-27 
Size of body 0-170x0-025 ... 4-31 x0-62 
Antenna tolerably slender, about as long as the thorax ; joints 
of the scapus pale yellow ; flagellar joints pale greyish-ochraceous, 
longer than broad, rather difficult to distinguish one from the 
other on account of their very dense minute pubescence. Head 
browmish-ochraceous, with short black hairs, and a few shoi-t seta 
at the hinder border of the eyes. Hypostoma and palpi very pale 
ochraceous. Thorax ochraceous-brown, densely covered with a 
short pubescence, the lateral borders and scutellum with black 
setaceous hairs ; pleura and scutellum ochraceous-brown ; meta- 
thorax brown, the metanotum with yellowish lateral patches. 
Halteres yellow, with a very minute pubescence. Abdomen slender, 
almost cylindrical, rather more than twice the length of the thorax, 
densely clothed with a shoi*t pubescence •, first four segments 
sordid ochraceous, all lyit the fourth marked superiorly wdth brown, 
almost the whole anterior half of the first segment brown, second 
segment with a triangular spot, third with an oblong spot ; fifth 
and .sixth segments brown, narrowly bordered posteriorly with 
sordid ochraceous; anal joint and forceps sordid ochraceous, densely 
haired. Coxte pale ochraceous, the first pair den.sely covered in 
front with a short pubescence ; femora and tibise ochraceous-brown, 
darker than the coxae on account of their dense pubescence; tarsi, 
tibial spurs and spines dusky brown. In the fore-legs the tarsi 
more than twice the length of the tibiie ; the metatarsal joint 
