350 PROCEEDINOS OF THE NATIONAL MUSEUM. vol. 43. 



Stibfamily BL.EFIIA.RIPE;ZIN.^E;. 



JyCNIMYIA, new genus. 



The description of this interestmg genus is made from the male only. 

 No ocellar bristles. Hind tibiae densely plumose without longer 

 bristle. No macrochsetse on first two abdominal segments except 

 short lateral ones and sometimes a very short inconspicuous atrophied 

 median marginal pair on second. Third segment ^vith a marginal row 

 of short spinelike macrochseta?. Fourth segment without spinelike 

 macrochsetse but thickly furnished with bristles and hairs. Scutellum 

 with four pairs of strong marginal bristles, none decussate, the apical 

 pair longest and widely separated. Disk of scutellum near posterior 

 apical edge with a few very short stubby spinehke macrochsetse. The 

 genus quite unmistakably belongs to the Blepharipezinge, in the 

 neighborhood of Parachxta, on the characters of macrochsetse, ciliate 

 hind tibiae, head, venation, etc. 



Proboscis short and stout, palpi curved and thickened at tip. 

 Vibrissal angles placed far above oral margin, distance being fully 

 one-half length of the third antennal joint, or more than length of 

 second antennal joint. Oral margin prominent but not nasute. 

 Facialia bare. Front at vertex about equal to width of one eye. 

 Cheeks rather more than one-half eye-height. One pair of strongly 

 reclinate vertical bristles. Frontal bristles descending to base of 

 third antennal joint. Second aristal joint about as long as wide. 

 Four postsutural and two sternopleural bristles. Apical cell open 

 just a little before wingtip. Bend of fourth vein rounded-rectangular, 

 hind crossvein nearer bend. Claws and pulvilli only moderately 

 elongate. 



Reproductive habit, almost certainly leaf-oviposition of black 

 microtype eggs. 



Type-species. — Jsenimyia alhicinda, new species. 



Named for the Province of Jaen, Department of Cajamarca, Peru. 



J.ffiNIMYIA ALBICINCTA, new species. 



Length of body, 12 to 13 mm.; of wing, 11 to 12 mm. Four males, 

 Rio Charape, in the montana of east slope of Cordillera Oriental, 

 Province of Jaen in northern Peru, about 5,000 feet, September 12 to 

 16, 1911, on foliage and on damp soil by stream. 



Face and cheeks wholly and densely silvery-white pollinose. 

 Parafrontals black, silvery-white pollinose showing densely so on 

 anterior two-thirds in some lights, less distinctly so at vertex. 

 Frontalia, antennae and palpi wholly dark broAvn or blackish. Occi- 

 put silvery, with silvery-white pile. Thorax and scutellum black, 

 pleurae faintly silvery; mesoscutum thinly silvery, with five black 

 vittae, median one nearly reaching scutellum, next one on each side 



