FAM. MYCETOPHILID/F; 
17 
Type species : H. tenuipes, Becker. 
Geographical distribution of species : 
I. H. ienuipes. Becker, Zeitschr. f. Hym. Dipt. p. 237 (1907); Mitt. Zool. Tunis, Canar}" Isl. 
Mus. Berl. V'ol. 4, p. 64, pi. 2, f. 22 (190S). 
5. Genus PLATYROPTILON, Westwood 
Platyroptilon, Westwood, Trans Ent. Sue. Lond. p. 23i, pi. 23, f. 3 (1849). 
Characters. — Head moderate, no rostrum, eyes large, meeting beneath the base of the 
antennas; ocelli two, large, closely approximated; mouth indistinct; antennae short, 2 -|- 10 jointed, 
each of the j(.)ints 3 to 1 1 emitting a long pilose branch, terminal joint elongate (PI. I, Fig. 2 I). 
Vein Rj ending in the costa just before the tip of Ro.^;,. Legs long and slender, posterior tibia; each w ith 
two spui's. Abdomen long and slender. 
Type species : P. Miersii, Westwood. 
Geographical distribution of species : 
I. P. Miersii, Westwood, Trans. Ent. Soc. Lond. p.23i, pi. 23. 1. 3 (1S49). Brazil. 
From Westwood's figure of the wing it appears that Sci is long, extending considerably be} ond 
the base of the radial sector; Scj is wanting, and the anal veui does not reach the wing margin; the 
venation much resembling that oi Heteropterna, Skuse. 
6. Genus HETEROPTERNA, Skuse 
Heteropterna. Skuse, Proc. Linn. Soc. X. S. Wales (2), Vol. 3, p. 1166 (18S8). 
Characters. — Head large, as wide as the thorax, almost circular from below. Eyes large, oval, 
entire, ver}- approximate on the face. Ocelli three, in a curved line on the front, the middle one much 
smaller. Palpi short, ver\' like those of Ccroplatiis. Antennae projecting forward, shorter than the thorax, 
ver^' flat and broad, broadest in the middle, 2 -\- 14 jointed; first joint of the scapus cupuliform, the 
second somewhat shorter and more catilliform; flagellar joints as in Ccroplatiis. Thorax short, broadly 
oval, ver}i' gibbose, much more so than in Ccroplatiis. Scutellum very small, about one-third the width of 
the thorax, semicircular; metathorax highly arched, very steep. Abdomen a little flattened, with seven 
segments. Legs short, tibiae spurred, spurs small, those of the hind tibite larger than those of the others ; 
tibiae and tarsi of the hind pair of legs enormously thickened (PI. I , Fig. 15); metatarsus with a distinct 
range of small spines on the inner side. Wings microscopicall}' pubescent, a little shorter than the 
abdomen; base very broad and rounded off; incumbent in repose. Costal vein extending beyond the 
tip of R4-1-5 but not quite as far as the tip of the wing; subcostal vein complete, terminating in the costa 
beyond the base of the radial sector; Sc^ (subcostal crossvein) wanting ; the radial sector forming a long 
stalked fork with a short anterior branch, the latter running into the costa ; anal vein complete, ending 
in the posterior margm of the wing (P|. 3, Fig. 13). 
Type species : H. Macleayi, Skuse. 
Geographical distribution of species : 
1. a^?ns, Skuse, Proc. Linn. Soc. N.S.Wales(2),Vol.5,p.6oi (464)(i89o). Australia. 
2. H. Macleayi, Skuse, ibidem (2), Vol. 3, p. 1167 (142), pi. 3i, f. 4 (1888). Australia. 
