Tur Crane-Furrs or New York — Part I 913 
summer species. QO. rubella has a long flight period, from June to Sep- 
tember, and some of the early spring species (as O. nubila and O. meigenii) 
reappear in the late summer and in the autumn, apparently being double- 
brooded. 
Tribe Limnophilini 
The genera of the tribe Limnophilini may be separated according to 
the following key: 
1. Sc: before the origin of the sector; antennae 17-segmented; wings pubescent. 
Ula Hal. (p. 913) 
Scz beyond the origin of the sector; antennae 16-segmented (apparently with fewer 
SPATE TUSMINIPAIELDNONYTOICAY IGG) eet wi eerie cio totic eel slcie one mice teks 2 
PRaVinestpubescent. atleast apically. (22.7 sis. sacks do eule goes ae aes eseeuceescee | 3 
Wings glabrous or with microscopic pubescence only.............. 0.0.0 c eee cee eens 5 
3. Pubescence including the entire wing; cell Mi absent.......... Ulomorpha O. 8S. (p. 913) 
Pubescence only on the apical cells of the wing; cell Mi present or lacking............. 4 
4, Small species, wing less than 5.5 mm.; male antennae short. .Adelphomyia Bergr. (p. 914) 
Larger species, wing over 6 mm.; male antennae elongated. 
Limnophila, subgenus Lasiomastiz O. 8. (p. 916) 
5. A supernumerary cross-vein in cell C.................2.205. Epiphragma O. S. (p. 914) 
No supernumerary cross-vein in cell C..................... Limnophila Macq. (p. 915) 
Genus Ula Haliday 
1833 Ula Hal. Ent. Mag., vol. 1, p. 153. 
1864 Macroptera Lioy. Atti dell’ Institut Veneto, ser. 3, vol. 9, p. 224. 
The small genus Ula includes about six described species, all being 
Holarctic except one species from Java. The larval stages of the known 
species are spent in fungi (Alexander, 1915a:1-8). The species are subject 
to considerable variation in the wing pattern, but it now seems that 
in eastern America there are at least two species, which are divided by 
the following key: 
Antennae elongate in the male; wings dusky, but without a heavy brown pattern. [Mon. 
DipiemNeeAmenemparte4.px Dil VSGON. oe. yay sce cacan ae oem U. paupera O. S. 
Antennae short in both sexes; wings with the cord and outer end of cell /st Mz seamed 
with brown. [Mon. Dipt. N. Amer., part 4, p. 276. 1869.] (Plate XLI, 164.) 
U. elegans O. 8. 
Genus Ulomorpha Osten Sacken 
1869 UlomorphaO.S. Mon. Dipt. N. Amer., part 4, p. 232. 
In the genus Ulomorpha there is but a single described species, agreeing 
superficially with Ula in the entirely pubescent wings but with Sc close 
at the tip of Sa. The immature stages are in rich organic earth, and are . 
