FAM. MYCETOPHILID.F: 
1 1 I 
high, shghtly arched. Abdomen of the male six segmented, with small anal segment and small forceps; 
in the female seven segmented, with short ovipositor ending in two oval lamellje. Hind legs moderately 
long, the fore and middle pairs rather short, middle and hind femora strong and compressed, the tibiae 
spurred, the hind pair with strong lateral setse, the middle pair with a single one on the inner side; 
plantae of the hind tarsi ciliate with fine setulae. Wings large, somewhat longer than the abdomen, oval, 
base rounded, with microscopic setula; arranged in longitudinal rows. Costa not prolonged beyond the 
tip of the radial sector and not reaching the tip of the wing; subcosta ending free, short; media forks 
under or proximad of the base of the radial sector; cubitus forks either distad or proximad of the fork 
of the media, its branches more or less converging, rarely parallel; anal veins incomplete (PI. 6, 
Fig. 22). 
This genus ma}- be distinguished from Epicypta and Mycetophila by its usually more or less conver- 
gent branches of the cubitus, from the latter by its three ocelli. The flies may be found in woods and 
shrubber\' during the Spring and Fall. The larvae live in rotten wood and fungi. 
Type species : M. dintidiain , Staeger. 
Geographical distribution of species : 
I. M. agilis, Meunier (fossil). Mon. Alycetoph. etc. p. 171, pi. 14, f. 3 (1904). Baltic amber. 
^2. M. analis, Coquillett, Proc.U.S.Nat. AIusA'ol. 23, p.5g8(irA£<;/»'fl)(igoi). United States. 
3. M. cordyliformis , Meunier (fossil), ibidem, p. 171, pi. 14, f. 2 (1904). Baltic amber. 
4. M. diiuidiata, Staeger, in Krojer, Naturh. Tidsskr. Vol. 3, p. 247 (11) Europe. 
(Mycetophila) (1840). 
dimidiata, Zetlerstedt, Dipt. Scand. Vol. 11, p. 4180(6) (Mycetophila) (iS5z); 
Winiiertz, Verb. Zool.-bot. Ges. Wien, Vol. i3, p. gii (i) (i863); 
Schiner, Fauna Austr. Dipt. Vol. 2, p. 484 (1864), 
Van der Widpii, Dziedzicki, Pamietnik Fizyjoj;;raf. Vol. 4, p. 6 (4), pi. 8, 
f. 11-14 (1884). 
. M. immaciilala, Dziedzicki, Pamietnik Fizyjograf. Vol. 4 (sep.) p. 4 (2), Eastern Europe, 
pi. 9, f. 17-20 (1884). 
6. M.panla, Loew, Berl. Ent. Zeitschr. Vol. i3, p. i5i (42) (i86g). Eastern United States. 
\ 7. M. Schnablii, Dziedzicki, Pamietnik Fizyjograf. Vol. 4 (sep.), p. 2 (i), Eastern Europe, 
pi. 9, f. 25-28 (1884) 
8, M. semifusca, Meigen, Syst. Beschr.Vol. i , p. 267 (i5) (M'i'«^//"Vfl)( 1818). Europe. 
semifuica, Winnertz, Verh. Zool.-bot. Ges. Wien, Vol. i3, p. 914 (2)(iS63); 
Schiner, Fauna Austr. Dipt. Vol. 2, p. 484 (1864). 
g. M. s/j'/ai'a, Dziedzicki, Pamietnik Fizyjograf. Vol. 4 (sep.), p. 5 (3), pi. g, Europe, 
f. i3-i6 (1884). 
^10. M. trifasciata, Coquillet, Inv. Pacifica, Vol. i,p. iS {Myceiophila) {igo5). California. 
— M. Van der IVulpii, Dziedzicki = dimidiata, Staeger. 
Zygomyia fascipennis. Lundstrom, and Mycetophila cinerea may belong here. 
61. Genus ZYGOMYIA, Winnertz 
Zygomyia. Winnertz, Verh. Zool-bot. Ges. Wien, Vol. i3, p. goi (36) (iS63). 
? Bolitliomyza. Rondani. Dipt. Ital. Prodromus. Vol. i, p. ig7 (i856). (Type a uomen nudum.) 
Characters. — Head oval, flattened in front, placed low upon the thorax; front broad, the 
anterior margin produced into a triangle which descends to the root of the antennae ; eyes small, circular; 
ocelli small, the laterals contiguous to the eye margin, the middle one very small, placed in a groove at 
the base of the frontal triangle; palpi incurved, four jointed, the first joint very small, the fourth as long 
or longer than the second and third taken together; antenna frequently nearly cylindrical, slender, 
