106 NORTH AMERICAN DIPTERA. 



1899, pi. 4, fig. 10), is a synonym of this species. The typical de- 

 scription and wing design agrees with this specimen, which I com- 

 pared with the typical E. araneosa at the National Museum. The 

 basal spot of" the first posterior cell in the typical specimens is some- 

 times expanded the full width of the cell and nearly to the small 

 cross-vein, making the stigmatic band narrower. 



The typical description oi' E. araneosa is not explicit enough as to 

 the wing design, and the reference to figure 21, plate 10, of Loew's 

 Monograph is to me entirely misleading. Figure 4, plate 11, is 

 nearer to it, excepting for the apical rays. This demonstrates the 

 danger of describing a Trypetid wing without figuring it. 



Euaresta abstersa Lw. 



Numerous specimens of both sexes, Alamogordo, N. Mex. ; Cloud- 

 croft, N. Mex. ; El Paso, Tex. ; Ysleta, Tex. 



Urellia inevarua Walk., PI. I, figs. 10 and 11. 



Numerous specimens of both sexes, HighroUs, Alamogordo, Las 

 Vegas, and Cloudcroft, N. Mex. ; El Paso, Tex. One male, Guad- 

 alajara, Mex. 



The first ray, from the stigma to the large spot, is sometimes 

 hardly distinguishable ; only one ray to the discal cell ; the small 

 ci'oss-vein faintly or not at all infuscated, sometimes a small spot on 

 the fifth vein. Dr. Coquillett kindly determined these for me. 



Urfllia radifera Coq., PI. I, fig. 12. 



Three males, Cloudcroft and Alamogordo, N. Mex. 

 Dr. Coquillett kindly determined these for me. 



Urellia stigmatica Coq., PI. I, fig. 13. 



Numerous specimens of both sexes, Alamogoi'do, N. INIex. 

 Dr. Coquillett kindly determined these for n)e. 



Urellia eugeiiia v. d. W. 



One male, Guadalajara, Mex. 



Urellia vicina v. d. W. 



Three males and ten females, Alamogordo and HighroUs, N. 

 Mex. 



The first ray stout ; one ray to the discal cell; the small cross- 

 vein infuscated. 



