508 PROCEEDINGS OF THE ACADEMY OF [Oct., 
segments with abundant strong hairs; tibiae without spurs. Wing 
(of the male) (Plate XXVII, fig. 40) with the stigma enormously 
enlarged so that the costal and radial veins in that field are bulged 
outward; stigma extending from the basal portion of cell Ri to the 
end of vein Ri; wing (of the female) with the stigma smaller, the 
cells Ri not so wide and the cross-vein r consequently shorter and 
more nearly straight. Sc moderately long, ending just before the 
fork of Rs; Sc2 far retreated, lying just beyond the origin of Rs; 
Rs long, straight, in a line with Ri+&; cross-vein r long, oblique, 
somewhat twisted, inserted at the end of Rs or just beyond on 
^2+3; R2+3 about as long as R2 alone; R2 arcuated at its base; cell 
1st Mi closed (sometimes open by the atrophy of cross-vein m, which, 
when present, is usually weak) ; basal deflection of Cui at or just 
before the fork of M; fusion of Cui and M3 moderate, about one-half 
of Cui alone or a little longer than the deflection of Cui. 
Genotype. — ? Trimicra empedoides Alexander. (Mid-western Ne- 
arctic region.) 
Empedomorpha empedoides Alexander. 
? Trimicra empedoides Alexander; Canadian Entomologist, vol. 48, pp. 44, 45 
(1916). 
This curious fly ranges from South Dakota to Texas and New 
Mexico, an unrecorded station being Brownsville, Texas, May 3, 
1904 (H. S. Barber), a 9 in the collection of the United States 
National Museum. 
GONOMYIA Meigen. 
Gonomyia Meigen; Systematische Beschreibung, vol. 1, p. 146 (1818). 
The numerous species of this genus may be divided into three 
subgenera, Gonomyia, Gonomyella and Leiponeura, and it is the last- 
named group that has caused so much confusion in the study of 
crane-flies during the past few years, the species having been de- 
scribed in a wide range of Limnobine and Antochine genera {Dicra- 
nomyia, Atarha, Elliptera, Teucholahis, Thaumastoptera, etc.). 
Brunetti, in his exhaustive work on the "Diptera Nematocera of 
British India," pp. 469, 470, enters into a long discussion as to 
the homologies of the veins of those species of Gonomyia which have 
but two branches of the sector reaching the wing-margin, i.e., the 
subgenus Leiponeura Skuse. He presents the rather far-fetched 
idea of the cell R2 being unusually large, sessile and the vein Ri+6 
lacking so that cross-vein r-7n connects M1+2 with R3. A study of a 
series of the species of the genus show the impossibility of this inter- 
pretation, Ri+6 being one of the most constant veins of the wing in 
