NEW MUSCOID FUES FROM THE ANDEAN MONTANYA 93 



Subfamily PSEUDODEXllN/E 

 Tribe CORDYLIGASTERINl 



Cordyligaster nyomala, new species. 



Length of body, 8.5 mm. ; of wing, 6 mm. One msJe, Nomala, 

 Upper Piura Valley, about 800 feet, April 27, 1912, on foliage. 



Differs from C. petiolata Wd. as follows : Antennae wholly pale 

 reddish-yellowish, concolorous with palpi, the shade of color being be- 

 tween yellow and ferruginous with a slight brownish tinge. Cheeks cind 

 parafacials light gold pollinose, nearly concolorous with the somewhat 

 deeper golden parafrontals ; lower orbits silvery and broad, upper orbits 

 linear and golden. Occiput cinereous, pile yellowish- white. Thoracic 

 scutum deep golden, with the four dusky vittae well defined. Pleurae 

 silvery. Scutellum wholly black, rather shining like abdomen. The two 

 forward abdominal fasciae silvery with a distinct brassy or golden tinge ; 

 anal segment wholly thinly silvery ; preanal segment narrowly more deeply 

 polished on hind margin. The black of abdomen is without perceptible 

 steel-blue tinge. The first and third abdominal segments are about equal 

 in length and noticeably longer than the second and anal, the latter being 

 nearly equal. Legs soft blackish, faintly shining, the coxae silvery. 

 Claws short, hardly as long as last tarsal joint. Wings well tinged with 

 fuscous on less than costal half, the rest very faintly tinged, base faintly 

 yellowish. Tegulae faintly smoky-yellowish, like wing bases. Halteres 

 nearly concolorous with tegulae, faintly reddish on bases. Hypopygium 

 pale reddish, almost color of antennae. 



Family HYSTRICIID/E 



Subfamily HYSTRICIIN/E 

 Tribe EPALPINl 



Signosoma, new genus. 



General characters of Epalpus, with the habitus of the E. signifera 

 group. Description is drawn from male only. Abdomen narrowed 

 anally, but anal segment very distinctly emarginate and buttockslike in 

 male. Front border of anal segment highly arcuate, the length of the 

 segment on median line being fully as great as or greater than combined 

 length of the first, second, and third segments on median line. Median 

 third of hind border of first and second segments extending in a straight 



