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 cequalis 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 (v) 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 with 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, PI. 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 (2) 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. 



