NO. 1935 MUSCOID FLIES FROM SOUTH AMERICA— TOWWSEND. 315 



flowers of species of Mikania; the female taken by Mrs. Charles H. T. 

 Townsend. 



Metallic bright green to bluish-green, the thorax and abdomen ver}^ 

 thinly pollmose with silvery visible only in oblique view. Occiput 

 and parafrontals green, with thin poUinose covering. Facial plate, 

 parafacials, cheeks, and orbits pale golden pollinose, without green. 

 Antennae and palpi wholly brownish-yellow, arista brown. Frontalia 

 brown. Tliird antennal joint two to two and one-fourth times as long 

 as second in male, about two and one-half times as long as second 

 in female. No median macrochaBtse on first abdominal segment, but 

 a median discal pair on second and third in both sexes and one median 

 marginal pair on second segment. A small strongly decussate apical 

 pair of scutellar bristles, and three strong lateral pairs, also a shorter 

 discal pair. Three sternopleural and three postsutural bristles. 



Type.—Csit. No. 15153, U.S.N.M. Female, November 1, 1910; 

 TD 3973, m., cpJi. sJc. 



Sixbfamily PHA-ISrilN^gE, 

 EUCELATORIA AUSTRALIS Townsend. 



Eucelatoria, sp. Townsend, Ann. Ent. Soc. Amer., vol. 4, 1911, pp. 130 and 



328.— TD 3906. 

 Eucelatoria australis Townsend, Ann. Ent. Soc. Amer., vol. 4, 1911, pp. 140 



and 328; Proc. Ent. Soc. Wash., vol. 13, 1911, p. 163. 



Length of body, 6 to 7 mm.; of wing, 5 to 5.5 mm. Tlie male 

 smaller than female. Various females and one male, Piura, Peru, 

 June 19, 1910, to April 5, 1911, on fohage; one female (TD 3906) 

 taken by Mrs. C. H. T. Townsend. 



Head silvery-cinereous pollinose, the parafrontals faintly golden in 

 female and the facial plate with a less distinct golden shade; the 

 parafrontals and cheeks of male are more distinctly golden. Frontalia 

 and antennae wholly dark brown. Palpi reddish-yellow. Thorax and 

 abdomen silvery-cinereous, the pollen of mesoscutum, scutellum, and 

 anal segment of female more or less distinctly golden. All the pollen 

 of abdomen in male has the golden shade, but tliat of second and third 

 segments of female and sometimes of scutellum practically lacks it. 

 The usual five vittse on mesoscutum; tliree sternopleural and tliree 

 postsutural bristles. Scutellum with three pairs of strong marginal 

 bristles, the weak apical pair entirely absent, the weak discal pair 

 present. Male with one median marginal pair of weak bristles on 

 first abdominal segment, two weak discal median pairs on second and 

 a strong median marginal pair, a weaker discal median pair on tliird 

 segment with weak discal lateral and a marginal row of ten strong 

 bristles, the anal segment with a marginal row and straggling weak 

 discal ones. The female has the discal bristles of first three segments 

 and the marginal ones of first tv/o segments less developed but present; 



