216 ENTOMOLOGICAL NEWS [XxXxXI, ’20 
from one another by a distance a little greater than the diameter of one; 
scutum gray, each lobe with a brown mark continued backward from the 
lateral praescutal stripes; scutellum gray, broadly margined with pale; 
postnotum light gray. Pleura grayish, a conspicuous yellowish longi- 
tudinal stripe across the dorsal portion of the mesosternum and the ven- 
tral portions of the mesepimeron, beginning as a narrow point behind the 
fore coxa, broadest above and immediately behind the middle coxa. 
Halteres long and slender, pale, the knobs dark brown. 
Legs with the coxae dark grayish brown; trochanters brown; remainder 
of the legs brown, the tips of the femora, tibiae and tarsi darker. 
Wings comparatively long and narrow, subhyaline, the stigma con- 
spicuous, oval, brown; veins dark brown. Venation: Sc long, Scr ending 
just before midlength of the long Rs; Sc2 removed a short distance from 
the tip of Scr, Scr alone being about equal to the basal deflection of Cuz; 
Rs very long, almost straight, longer than the combined R2+3 and R3 
beyond it; r on R2+3 nearer the fork of Rs than to the fork of R2+3; 
R2 approximately equal to R2+3; cell rst M2 open by the atrophy of 
the outer deflection of M3; basal deflection of Cur a short distance be- 
fore the fork of M. 
Abdomen dark brown, sparsely pruinose, the caudal margins of the 
segments narrowly pale. Male hypopygium with the pleurites stout, 
the appendages inserted near midlength of the inner face; three pleural 
appendages, the largest heavily chitinized, bifid, the outer arm again 
slightly split at the tip so that the entire appendage appears indistinctly 
trifid; inner pleural appendage a flattened blade that is slightly dilated 
distally and provided with rather numerous sense setae; outer pleural 
appendage about as long as the second appendage, heavily chitinized, 
sinuous, narrowed to the blunt apex. Penis-guard long and narrow, the 
apex indistinctly trifid. Ovipositor with the valves slender, acute, strongly 
upcurved. é 
Habitat: Argentina. 
Holotype: &; Cueva Iturbe, Province of Jujuy, altitude 
3700 meters, November 10, 1919 (Vladimir Weiser). Allo- 
type: 9, Hornadita, Province of Jujuy, altitude 3400 meters, 
November 30, 1919 (Weiser). Paratypes: 1 @, with the 
allotype; 7 o' 4 9, Tilcara, March 20, 1920. 
This interesting fly is dedicated to its collector, Sefior 
Vladimir Weiser, to whom we are indebted for considerable 
assistance in determining the range of distribution of Tipu- 
lidae in Argentina. 
Gonomyia (Gonomyella) argentinensis new species. 
General coloration light brownish gray; antennae dark brown, meso- 
notal praescutum with three brown stripes; pleura dark brown with a 
