1916.] NATURAL SCIENCES OF PHILADELPHIA. 523 
The Galadoptera Group. 
Gonomyia (Gonomyia) galactoptera Bergroth. 
(jononu/la (/altirtoptira Bergroth; Wiener Entoinologische Zcilung, vol. 7, 
p. 196 (iSSS). 
This fly is still known only from the type-locality, Sitka, Alaska. 
It is the only New World species of this genus that I have not seen. 
The Noveboracensis Group. 
Gonomyia (Gonomyia) noveboracensis Alexander. 
Gonomyin novvborncensis Alexander; Canadian Entomologist, vol. 48, pp. 
319, 320 (1916). 
A fly of local distribution in the northeastern United States: 
New York, Fulton County, Sport Island, Sacandaga River, June 
11, 1914 (Alexander), the type-locality. 
The wing is shown on Plate XXVI, fig. 30. 
The male hypopygium (Plate XXX, figs. 79, 80) with the pleurites 
prominent, elongate, with the dorsal inner edge with a prominent 
tubercle bearing several hairs, ventral inner edge with a row of large 
setigerous tubercles; pleurites bearing three small appendages, a 
small inner dorsal cylindrical appendage (a) directed cephalad, 
slightly enlarged basally, at the apex bearing three or four prominent 
hairs; a dorsal apical appendage (6) directed proximad, flattened, 
enlarged at the apex which bears a row of delicate hairs; a slender, 
subchitinized ventral apical appendage (c) directed proximad, 
slightly toothed at the tip and on the lower side just before the tip. 
Gonapophyses and the penis-guard (Plate XXX, fig. 80) fused into a 
very large, prominent, cylindrical tube armed with chitinized horns 
and fleshy lobes; dorsal surface of the tube with two subpendulous 
fleshy lobes, approximated on the median line, densely provided with 
short, pale hairs; horns of the cylinder directed caudad and slightly 
ventrad; outermost horns (a) very broad at the base, tapering to the 
acute apex which is curved proximad; the next inner pair (6) slender, 
chitinized, bifid at the apex; innermost pair (c) longest, slender, 
slightly twisted, narrowed toward the apex. Ninth tergite with a 
broad, rounded median concavity. Ninth sternite with a broad 
V-shaped median notch, the adjacent angles produced caudo-laterad 
as fleshy lobes provided with numerous setigerous punctures. 
The Suhcinerea Group. 
Gonomyia (Gonomyia) filicauda Alexander. 
Gonomyia filicauda Alexander; Canadian Entomologist, vol. 48, pp. 320, 321 
(1916). 
Still known only from the type-locality, Webster, near Platte 
Canon, Colorado, altitude 9,500 feet, August 24 to 26, 1915 (Oslar), 
