NO. 2152. NEW MUSCOID FLIES— TOWNSEND. 321 



widtli, the front scarcely widening from same, the face only slightly 

 widening from front. Head almost evenly triangular in profile. 

 Scars of what are apparently two reclinate fronto-orbitals, but no pro- 

 clinate ones. Frontals descending to base of third antennal joint. 

 Facial depression not quite so deeply hollowed, facialia not ciliate. 

 Frontalia broad, of even width, wider than middle of parafrontal. 

 Second antennal joint strongly elongate; the third only one and one- 

 half times second, trmicate at tip but lower angle rounded wliile the 

 upper is sharply pointed. Arista shorter than third antennal joint, 

 porrect, thickened on hardly over basal half, the basal joints short. 

 Epistoma not notched. Three sternopleurals. Apical scutellars 

 more hau-fike, erect, subdecussate. Median marginal pair of macro- 

 chaetae on first and second abdommal segments, median discal pair 

 on second and third segments, marginal row on third and anal, the 

 last also with a discal row. Tarsi elongate, normal; claws quite 

 elongate. Apical cell widely open; the apical and hind cross veins 

 more bent. Same single long bristle at base of thu-d vein. 



METOPOSISYROPS ORYZAE, new species. 



Length of body, 7.5 mm.; of wing, 6 mm. One male, Bandoeng, 

 Java, August, 1912, reared from "rice-borer?" (K. W. Dammerman, 

 No. 313). 



Dark brown to blackish. Parafrontals, face, cheeks, and orbits 

 silvery pollinose; occiput ashy. Antennae and palpi black. Thorax 

 and scutellum silvery, two narrow inner vittae and two very wide and 

 heavy outer ones. Last thi'ee abdominal segments broadly silvery- 

 white on base; the pollen broadening in middle on the intermediate 

 segments, but leaving a wide median vitta on second and a narrower 

 one on third. Wings very faintly tinged with smoky, almost clear. 

 Tegulae nearly white. 



Eoloty^e.—^o. 20050, U.S.N.M. 



Genus CHAETONODEXODES, new genus. 



Genotype. — Chaetonodexodes rafaeli, new species. 



Seems allied to Oestrogastropsis, the male of which is unknown, 

 differing from the female of that genus as follows: Male. Form very 

 naiTowed; the abdomen still narrower than head and thorax, sub- 

 cylindrical but narrowed apically. Front of even width with vertex, 

 a little over one-fifth head-width ; frontalia wider than one parafrontal. 

 Ocellars as strong as frontals. Three reclinate and two proclinate 

 orbitals as in female of that genus. Facialia cihate. Third antennal 

 jomt two and a half times second. Parafacials almost linear. No 

 discal bristles on any of the abdominal segments. Tarsi deUcate, 

 claws very short. Wings more narrowed, costal spine distinct. 

 Sternopleural, postsutural, and scutellar bristles same. Eyes de- 

 scending just as low as vibrissae, 'less than twice as high as broad. 

 86399°— Proc.N.M.vol.51— 16 21 



