DESCRIPCIÓN OF NEW SPECIES 

 SUBORDER ORTHORRAPHA 



Series Brachycera 

 Family Leplidae 



Flies with f ew or no bristles ; tlie' third antennal joint with annii- 

 lae or without anniilae and bearing a terminal style, or arista ; some 

 or all of the tibiae with apical spurs ; pnlvilli and empodiiim pad-like ; 

 wing veins weil defined ; not eontraeted anteriorly ; sqiiamae greatly 

 reduced. 



Gemís Chrysopila Macquart. 



Third joint small, roimded apieally and bearing a terminal arista; 

 anal cell closed just before the wing margin; body usnally with 

 abundant brassy or silvery pile. 



Chrysopila argentina, new speeies. 



Male: — Of rather small size (6 mm, ; wing 6 mm.), thorax and 

 abdomen covered with brassy pile ; wing partly clouded. 



Head: — Oeellar triangle raised, dark gray in color; eyes 

 contiguous above antennae; antenna small, blaek, the third joia." 

 smaller tlian the second ; arista black, pubescent, aboiit three times the 

 length of the antenna ; face and palpi dark gray. 



Thorax : — Black, the dorsum overlaid with brassy pile ; bristles 

 present on postalar-callus and posterior margin of sciitelliim; pile 

 present on iipper margin of mesopleura, on lower portion of sterno- 

 plenra, on the upper portion of hypopleura and on the raetapleura ; 

 femora and tibiae yellow, a little darkened ontwardly, tarsi dark ; mid 

 tibia with a pair of prominent apical spurs, hind tibia with a single 

 spur. 



Abdomen : — Black, covered with yellow pile which on the sternum, 

 is heavily intermixed with black. 



Wings : — Subhyaline, the stigma dark and the veins clouded ; 

 petiole beyond anal vein a little less than length of anterior cross- 

 vein. 



Haltere : — Darkened apicall5\ 



Femulc : — Somewhat large and more robust in appearance than 

 the male. Front broad, nearly equal to one-third the head-width, 

 dark gray in color. 



Three male and one female, collected in an open field near woods, 

 and within shady woods. 



Tijpe locality: — Raco, 1,200 meters, Tucnman, (13.2.27; R. C. 

 Shannon). AIso from Tafi Viejo, Tuciiinan, (14.8.27; R. C. 

 Sliannon). 



Chrysopila delpontei, new species. 



A small, velvety black species with silvery deeumbent pile at base 

 of the abdomen. 



Male: — Length 5 mm. ; wing 4.25 mm. Face, palpi and probos- 

 ci.s black ; thorax black ; legs yellow with the tarsi and bases of the 



