FAM. MYCETOPHILID^ 
65 
10. Genus APHELOMERA, Skuse 
Aphelomera. Skuse, Proc. Linn. Soc. N. S. Wales (2), Vol. 3, p. 1206 (35) (1888). 
Characters. — Head small, round, the fore part flattened, situated deep in the thorax; ocelli 
three, of almost equal size, arranged in a curved line high on the front; eyes ovate, a little emarginate 
above on the inner side ; palpi prominent, incurved, four jointed; first and second joint somewhat robust, 
first joint small, second twice the length of the first, third rather longer than the first and second taken 
together and considerably more slender, fourth joint very slender, about equal in length to all the others 
taken together. Antennae arcuated, projecting forwards, longer than the head and thorax combined, very 
slender, 2 -j- 14 jointed, joints of the scapus about equal size, cupuliform, both setiferous at the apex; 
flagellar joints cylindrical, with a dense, short pubescence. Thorax ovate, highly arched, scutellum 
small, almost semicircular; metathorax high, acclivous. Abdomen slender, cylindrical, six segmented 
with an anal joint almost as large as the sixth abdominal segment, and small forceps. Legs long, slender; 
femora not so robust as the coxae, compressed; tibia- spurred, and the intermediate and hind pairs each 
with two rows of lateral spines. Wings oblong-ovate, longer than the abdomen, rounded ofi:" at the base, 
microscopicall}' pubescent. Costal vein extending far beyond the tip of the radial sector, stopping a 
little before the apex of the wing; subcostal vein joining the costa a short distance before the base of 
the radial sector; basal cell R quite short; humeral crossvein quite oblique; Sc^ (subcostal crossvein) 
wanting; Rj joining the costa at a point three-fourths of the distance from the root of the wing to the tip 
of the costa ; media simple, detached at the base; anterior branch of the cubitus disconnected at the 
base, indistinct, and quite short; anal vein rudimentary (PI. 4, Fig. 2 2). 
Type species : A. sydiieyensis, Skuse. 
Geographical distribution of species : 
1. A. Skusei, Marshall, Trans. New Zeal. Instit. Vol. 28, iSg5, p. 296, New Zealand. 
pi. II, f. 4 (1896). 
2. A. sydneyensis, Skuse, Proc. Linn. Soc. N. S. Wales (2), Vol. 3, p. 1207 Australia. 
(164), pi. 32, f. i3 (1888). 
II. Genus TRIZYGIA, Skuse 
Trizygia. Skuse, Proc. Linn. Soc. N. S. Wales (2), Vol. 3, p. 1204 (34), (1888). 
Characters. — Head small, roundish-oval, flattened on the fore part, situated deep in the 
thorax; ocelli three, of almost equal size, arranged in a triangle on the front; eyes ovate, a little emargi- 
nate on the inner side above; palpi prominent, incurved, four jointed, first and second short, of about 
equal length, third as long as the first and second united, fourth slender, about the length of the three 
preceding; antennte about the length of the head and thorax taken together, projecting forwards, 
arcuated, 2 + 14 jointed, with a short downy pubescence; joints of the scapus cupuliform, the second 
setose at the apex; flagellar joints cylindrical. Thorax ovate, narrower and not so gibbose as in Aphelo- 
mera; scutellum small, nearly semicircular; metathorax highly arched but not so high as in Aphelomera. 
Abdomen short, cylindrical, with six segments; anal joint supporting the forceps longer and narrower 
than the terminal abdominal segment. Legs long, moderately robust ; femora compressed, the hind pair 
much larger and broader than the others; tibia; spurred, the intermediate and hind pairs with mode- 
rately long lateral spines, the former with a few spines on the inner side, and the hind pair with two 
