NO. 1935 MU8C0ID FLIES FROM SOUTH AMERICA— T0WN8END. 361 



times and always with wrinkle, hind crossvein nearer to apical 

 crossvein. 



Reproductive habit unknown, but probably larviposition from a 

 double-sac uterus. 



Type-spedes. — (Jhloronesia andina, new species. 



CHLORONESIA ANDINA, new species. 



Length of body, 7 to 8 mm. ; of wing 6.5 to 7 5 mm. Two females, 

 near Manchi, on the western slope of the CordUlera Occidental in 

 southern Ecuador, in a humid montana region, about 7,000 to 7,500 

 feet, November 22 to 26, 1910, on flowers of Baccharis jiorihunda 

 and on foliage. 



Wliolly bright metaUic green with some bluish or darker reflec- 

 tions. Parafrontals, parafacials, cheeks and orbits thickly light 

 brassy poUinose. Occiput thinly silvery pollinose. Facial plate 

 and facialia obscure yellowish and faintly brassy. Frontalia dark 

 brown to reddish-brown. Antennae whoUy dark brown, arista black- 

 ish. Palpi blackish. Pleurge rather thickly sUvery, mesoscutum 

 very thinly so, five very obscure and delicate metallic golden vittse 

 not due to pollen. ScuteUum and abdomen bright green with faint 

 bluish reflections, the venter silvery, the scutellum less silvery, and 

 dorsum of abdomen scarcely or not at aU so. Legs black; femora 

 metallic greenish, faintly silvery. Wings nearly clear, with very 

 faint infuscation along veins. Tegulee white. 



Type.— Cat. No. 15205, U.S.N.M. 



Sulafamily ]yiII..TOG-E,-A-M:M:iN".S]. 

 METOPIA MERIDIANA, new species. 

 Metopia, ep. Townsend, Ant. Ent. Soc. Amer., vol. 4, 1911, p. 130.— TD 3988. 



Length of body, 4 to 4.75 mm. ; of wing, about 3.5 mm. Five males 

 and one female, Piura, Peru, November 8, 1910, and one male April 

 7, 1911, on sand and foliage in sunshine. 



The males have the inner edge of forward half of parafrontals 

 developed entirely over the part of frontalia between them and 

 meeting on median line like the peak of a roof, the whole of this por- 

 tion of parafrontals and all of parafacials being like burnished silver. 

 The female lacks all this and in consequence her front is not so 

 sharply produced nor so acute above. She has no silvery on head, 

 all being cinereous with the parafrontals faintly golden, frontalia 

 and antennae wholly dark brown. Facial j)late of male cinereous, 

 antennae and visible portion of frontalia dark brown, posterior half 

 of parafrontals cinereous with a very faint golden shade. Palpi 

 black. Occiput ashy. All of thorax and abdomen cinereous, with 

 a very faint golden tinge on dorsal portions including scutellum, the 

 usual four faint narrow vittae on mesoscutum, the second to fourth 



