526 PROCEEDINGS OF THE ACADEMY OF [Oct., 
type-location (Pullman, Whitman County, Washington, June 22, 
1898) is outside of the range of that species as now known. 
Gonomyia (Gonomyia) aequalis Alexander. 
Gonomyia aequalis Alexander; Canadian Entomologist, vol. 48, pp. 323, 324 
(1916), 
An extra-limital species (Guatemala, Central America) whose 
hypopygium has never been figured. 
Male hypopygium (Plate XXX, fig. 86) with the pleurites mod- 
erately stout, the dorsal angle produced caudad as a very slender, 
finger-like lobe that is provided with numerous setigerous tubercles; 
at the base of this lobe on the inner side is a tiny fleshy protuberance 
directed proximad; ventral pleural appendage (y) a pale fleshy lobe 
densely covered with short, pale hairs; dorsal pleural appendage 
{d) irregular, fleshy, directed proximad, the caudal or outer face near 
the apex Avith a strong, curved, chitinized hook that is directed 
dorsad and cephalad, the cephalic or inner face with a row of strong 
bristles, at the tip longer and more approximated. Ninth tergite 
almost straight across or slightly concave. Penis-guard rather 
long, compressed, the median appendage pale, slightly curved. Anal 
tube {a.t.) broad, prominent, subtended on either side by a concave 
wing bearing on the caudal outer angle a fimbriate tuft of yellow 
bristles. 
Gonomyia (Gonomyia) virgata Doane. 
Gonomyia virgata Doane; Journal of the New York Entomological Society, 
vol. 8, p. 189, PL 7, fig. 21 (1900). 
A western species with the following rather restricted range: 
Washington, Pacific County, Tokeland (Doane), the type-locality. 
California, Humboldt County, Eureka, June 6, 1903 (H. S. Barber). 
The wing is shown on Plate XXVI, fig. 32. 
The male hypopygium (Plate XXX, fig. 87) with the ninth pleurites 
rather elongate, the dorsal inner angle produced caudad as a slender, 
cylindrical, fleshy lobe that bears numerous long pale hairs; ventral 
pleural appendage (v) prominent, directed caudad, narrowed at the 
base, the apex a slight chitinized tooth directed proximad; second 
pleural appendage (S) a flattened or concave lobe, heavily chitinized 
at the apex which is broad, split into two acute teeth, of which the 
proximal one is the larger; dorsal pleural appendage (d) small, fleshy, 
bent slightly cephalad at the tip which bears two elongate bristles; 
cephalic or inner face of the appendage bearing numerous setigerous 
tubercles. Ninth tergite large, the caudal margin feebly convex, 
bearing a short, pointed tooth just inside the base of the pleurite. 
