BY FREDERICK A. A. SKUSE. 
1159 
middle of the thorax, becoming setose posteriorly ; the lateral 
margins setose ; scutellum with very few hairs. Pleurae ochraceous- 
brown, somewhat ferruginous. Halteres yellow at the base of the 
stem, the remainder smoky-brown ; rather densely covered with a 
minute pubescence. Abdomen very slender, about three times the 
length of the head and thorax taken together, uniform yellowish- 
brown approaching light umber, with a rather dense long black 
pubescence ; forceps of the same colour, small, densely haired. 
Coxae ochraceous-brown, the fore pair densely setose in front ; 
femora and tibiae somewhat yellowish-brown ; tarsi dusky on 
account of their dense black pubescence. Wings shorter than the 
body, almost hyaline, with a greyish tint, veins umber brown ; 
brilliantly iridescent when viewed at a certain obliquity. All 
veins, except the cross-veins and the fifth longitudinal, ciliated. 
Auxiliary vein joining the costa before the base of the cross- vein. 
Extreme tip of the first longitudinal vein somewhat dilated. 
7/rt5.— Middle Harbour (Skuse). September ; one specimen 
under an over-hanging rock. 
Ohs. — This has much the general appearance of M. 2Iastersi 
described further on, but can readily be distinguished from it by 
the absence of the oblique band on the pleurae, the microscopically 
haired wings, and the scarcely distended tip of the first longitu- 
dinal vein. 
h. Wings with brown spots. 
1.39. Macrocera decorosa, sp.n. (PI. xxxi. fig. 1.) 
(J. — Length of antennae 0-420 inch ... 10'66 millimetres. 
Expanse of wings 0-220 x0'075 ... 5-59 x 1-89 
Size of body 0-220x0-025 ... 5-59 x0-62 
9 . — Length of antennae 0-420 inch ... 10-66 millimetres. 
Expanse of wiug.s 0-270 x 0-090 ... 6-85 x 2-27 
Size of body 0-270x 0-040 ... 6-85 x 1-01 
Antennae nearly twice the length of the body; joints of tlie 
scapus yellowish-brown ; flagellar joints pale brown, the base 
of the first yellowish-brown. Hypostoma yellowish-brown ; front 
