Dec, I9I3-J MeLANDER: SyNOPSIS OF DiPTERA. 293 



Third vein broadly brown, expanding anteriorly at tip of wing, the root of the 

 wing black, the posterior veins obscurely bordered ; both vibrissse 

 small ; palpi whitish ; pleurae whitish, with black border above ; front 

 femora beneath with a row of uniform bristles ; mesonotum often 

 with two pale stripes. 2.5 mm. (Pa., N. J., Wise.) .albicosta Walker. 



ANTHOMYZA Fallen. 



Head, thorax, abdomen, halteres and legs, except the last tarsal joint, wholly 



yellow. 2.6 mm. (Eur. ; Wash.*) pallida Zetterstedt. 



Partly or wholly blackish 2. 



2. Pleuras yellow, largely or wholly ; last tarsal joint black 3. 



Pleurae wholly black, lightly cinereous ; legs entirely yellow ; occiput and 



thorax black, abdomen brownish ; halteres yellow. 2.5 mm. (Eur. ; 

 Ont.,* 111.,* N. Mex.,* Id.,* Wash.*) gracilis Fallen. 



3. Mesonotum and scutellum grayish; head, antenns, humeri, pleurae, venter, 



halteres and legs yellow. 2.5 mm. (Alaska, Wash.,* N, H.) 



tenuis Loew. 



Largely yellowish ; occipital spot, mesonotum with four faint vittae, pleurae 



above and abdomen with fuscous fasciae, darker. 2.3 mm. (D. C, 



N. J., Ga., Cal., Wash.*) variegata Loew. 



MUMETOPIA new genus. 



Related to Anthoniyza but differs in the narrower face and cheeks, 

 the reduction of the fronto-orbital bristles, and the specialization of 

 the interfrontalia. 



Eyes large, subquadrate, the facets of the lower-front part en- 

 larged so as to reduce the face and cheeks, the face thus at most 

 scarcely more than one half the width of the front at its middle, and 

 the cheeks about one tenth of the eye-height. The uppermost fronto- 

 orbital not behind the middle of the front, at most one small fronto- 

 orbital anterior to this. Ocellar triangle very large, glistening, reach- 

 ing quite to the frontal suture ; frontal orbits differentiated ; upper 

 occiput concave ; postverticals minute or wanting. Two dorsocen- 

 trals; basal scutellars minute; acrostichals greatly reduced; two 

 sternopleurals. Front femora with thorn beneath and with usual 

 bristles; no preapicals; ungues small. Wings narrow, three times as 

 long as wide, the anal angle not pronounced. 



The pubescence of the arista is pronounced so as to be almost 

 short-plumose. The body is polished, almost devoid of a pollinose 

 coating. 



Type : Mumetopia occipitalis new species. 



