CHARLES P. ALEXANDER 9 



Mesonotum dark brownish gray, the praescutum with a broad, dark brown, 

 median stripe whose sides are parallel-sided; lateral stripes much narrower 

 and less distinct; remainder of the mesonotum blackish. Pleura gray. Hal- 

 teres yellow, the knobs a little darker. Legs with the coxae blackish; tro- 

 chanters dull brownish yellow; remainder of the legs dark brown. Wings with 

 a faint gray tinge, the stigma and costal region faintly yellow, the costal 

 veins brown. Venation as in R. nipponensis. 



Abdomen dark brownish black, the hypopygium a little paler brown. Male 

 hypopygium similar to that of R. nipponensis, but the subapical spine on the 

 outer face of the outer pleural appendage much longer and very conspicuous. 



In some specimens, the ground color of the mesonotum is buffy-brown 

 instead of brownish gray. 



Habitat. — Japan. Holotype, cf, Meguro, Tokio, April 29, 

 1919, (R. Takahashi). Allotopotype, 9, May 5, 1919. Para- 

 topotypes. 7 cf 9 , April 29 to May 20, 1919. 



Tribe Enopterini 

 Genus ERIOPTERA Meigen 



Erioptera (Acyphona) incongruens Alexander 



1913. Eriopkra (Acij phono ) i ncongruens Alexander, Can. Ent., xlv, pp. 288, 289. 



The original description of this species was based on a unique 

 alcoholic male which was badh^ broken. A female specimen is 

 now available and may be described. 



Female. — Length, 6 mm.; wing, 6.5 mm. 



This interesting fly differs considerably from the same sex of E. (A.) asym- 

 metrica Alexander. Legs with only the fore femora biannulate with dark 

 brown and the rings much narrower than the yellow area between them; 

 middle and hind legs with only the subapical brown rings. The wing pattern 

 is much more ocellate than in asymmetrica, ocelliform markings occur at the 

 origin of Rs, at Sci, tip of Sci and r, tips of Ri and all the other longitudmal 

 veins; at the end of Rs and on r-m and as a broken subterminal band across 

 the wing beyond the distal end of cell 1st Ah; in addition, almost all the cells 

 of the wing have an abundance of small brown dots which are lacking only 

 in the costal region; vein M3 before m about as long as or slightly longer than 

 the basal deflection of Cui. 



Allotype, 9, Meguro, Tokio, April 26, 1919, (R. Takahashi). 



The collector states that this species is "very rare." 



Genus MOLOPHILUS Curtis 

 Molophilus trifilatus new species 



General coloration sliiny black; legs with the trochanters and femoral 

 bases yellowish; male hypopygium with three acicular spines, two being 

 pleural appendages, one the penis-guard. 



TRAXS. AM. EXT. SOC, XLVI. 



