60 PROC. ENT. SOC. WASH., VOL. 24, NO. 2, FEB., 1922 



Alexandriaria, new genus. 



Type. Alexandriaria siijfusca, new species. 



This genus would contain the usual characters of Dicranomyia of Stephens, 

 except that but one branch of the median vein reaches the margin of the wing 

 and that there is no cell 1st M2. 



In describing D. whartoni Dr. Needham mentioned that the antennal seg- 

 ments (tip) show a tendency to fuse; in A. snffusca n. sp. the right antenna 

 has segments three and four apparently united, four being smaller than usual. 

 This is not the case with the other new species which have all segments clear. 



Alexandriaria suffusca, n. sp. 



Male. Length 5 mm.; wing 5 mm. Head brown, pale; occiput to vertex 

 suffused; face and rostrum yellow brown; palpi gray black, first joint paler. 

 Antennae dark brown, segment one slightly paler; thorax dorsum pale brown, 

 with a broad median dark brown stripe from the collar to the suture and a short 

 broad one on each side from the suture to near the tuberculate pits which are 

 plainly visible; pleura and coxae yellow to whitish brown. Abdomen dorsally 

 all dark brown, ventral segments 2 and 3 yellow brown shading to dark brown 

 at the anus; hypopygium lighter, in part yellow brown; anal style and 

 its base completely visible, not covered by the 9th sternite. Legs brown, tarsi 

 dark. Wings broad, hyaline, veins yellowish to dark. Sc joining C at the 

 origin of RS, RS leaving R at a broad angle somewhat curved; vein R at about 

 the middle of cell 1st R becomes pale and colorless reaching C in this condition; 

 cross vein R is also pale. 



Female. Length 5.5 mm.; wing 5 mm. Similar to the male but darker 

 throughout; pleura blackish; no yellow on the abdomen ventrally; only coxae, 

 face and rostrum yellow brown. Wing veins all heavy and strong, except the 

 tip of R and cross vein R which are as in the male. Cu2 does not reach the 

 wing margin, stopping abruptly and strongly near the wing margin, the other 

 wing is torn in this place. 



Holotype male, and allotype female taken at the same place 

 and time on Oct. 9, 1920, Cranbrook, B. C., Alt. 2950 ft. 



Alexandriaria intermedia, n. sp. 



Male. Length 5 mm.; wing 5 mm. Head rich yellow brown, occiput to 

 vertex only a shade darker; face, rostrum and base of first palpi yellow brown, 

 rest of palpi gray black; antennae dark brown, most of segment one yellow 

 brown. Thorax, dorsum rich brown, a broad median dark brown stripe from 

 collar to near tuberculate pits, the pits are not distinctly marked. Pleura 

 yellowish. Abdomen all yellow brown parts infuscated. Hypopygium yellow- 

 ish, base of anal style about half covered by the 9th sternite. Legs brown, 

 tarsi darker. Wings, hyaline; Sc joins C slightly before the origin of RS; RS 

 leaves R more acutely than in snffusca and less curved; tip of R and cross vein 

 R where they join pale and colorless. Wings narrower than suttusca but less 

 so than kooteniensis. 



