220 NEW YORK STATE MUSEUM 
Abdomen dark brown, basally dark orange, the segments sparsely 
haired; ovipositor pale yellowish. Wings hyaline, costa pale brown, 
the third vein uniting with the margin at the apex. Coxae and 
base of femora reddish orange, the most of femora, tibiae and tarsi 
dark brown; claws long, stout, evenly curved, the pulvilli rudi- 
mentary. Ovipositor short, the lobes lanceolate. Type Cecid. 
argig. 
Hormomyia alexanderi n. sp. 
This midge was swept from palustral grasses at Johnstown, N. Y., 
July 7, 1909 by C. P. Alexander. 
Female. Length 3.5 mm. Antennae nearly as long as the body, 
thickly haired, pale fuscous yellowish; probably fourteen segments, the 
fifth binodose, with a total length about five times its diameter, the 
basal and distal portions of the stem, each a little longer than their 
diameters; the basal enlargement subglobose, a sparse whorl of 
stout setae and a circumfilum, the loops long; distal enlargement 
broadly oval, with a length nearly twice its diameter; subbasal and 
subapical circumfila, the loops long and a scattering whorl of stout 
setae. Palpi; basal segment rather stout, with a length five times 
its diameter, the distal segment greatly produced, with a length 
nearly three times that of the first. Mesonotum golden reddish. 
Scutellum and postscutellum yellowish. Abdomen a variable golden 
yellowish, sparsely haired. Wings subhyaline, thickly clothed with 
fuscous hairs, costa fuscous, the third vein uniting with the margin 
a little beyond the apex. MHalteres yellowish orange. Coxae and 
femora mostly yellowish orange, the tibiae fuscous orange, tarsi a 
little darker; claws long, evenly curved, the pulvilli rudimentary. 
Ovipositor short, the lobes broadly and irregularly oval. Type 
@eciday ras: i 
TRISHORMOMYIA Kieff. 
1912 Kieffer, J. J. Neue Gallmucken-Gattugen, Bitsch, p. 2 
1913), =| | Gens Insect. fase: 152, p. 139-40 
Certain species in this genus are separated with difficulty from 
Hormomyia Kieff., though the extreme forms cannot be confused 
with typical members of the older genus. The type is T. strobli 
Kieff. 
A careful study of American material has resulted in separating 
species referable to this genus by the following characters. The 
insects are smaller and the mesonotum less distinctly produced over 
the head than in Hormomyia. There are fewer antennal segments, 
fifteen (the fifteenth being rudimentary) being the maximum and 
most species having but fourteen. The flagellate antennal segments 
of the male have the enlargements more produced than in Hormomyia 
H. Lw., and the circumfila are relatively longer and there are marked 
though not easily characterized differences in the genitalia. The 
flagellate antennal segments of the female are cylindrical, mostly 
