26 PROCEEDINGS OF THE NATIONAL MUSEUM vol.74 



Thorax green, dorsum covered with brown pollen, pleurae with 

 white pollen. Abdomen green, dorsum with coppery reflections, 

 except the last segment; hairs of the abdomen and hypopygium 

 black, a few on the venter pale. Hypopygium small with small, 

 black lamellae, which project downward and curve backward at tip. 



Coxae, basal half or more of fore femora and upper surface of 

 posterior femora black; apical part of fore femora, their tibiae, 

 base of fore tarsi and middle femora and tibiae yellow ; extreme tips 

 of middle tibiae, fore and middle tarsi and posterior tibiae yellow- 

 ish brown; last joint of fore and middle tarsi, tips of posterior 

 tibiae and the whole of posterior tarsi black; last joint of middle 

 tarsi (fig. 30) flattened and widened; hairs and bristles on fore 

 and middle coxae white, hairs of fore coxae rather long; femora 

 nearly bare below; bristles of posterior tibiae fully as long as the 

 diameter of the tibia; length of fore tibiae as 52, joints of fore 

 tarsi as 31-12-9-8-8; thos& of middle ones as 47-22-17-11-11; joints 

 of posterior pair as 34-28-18-12-11. Calypters yellow with brown 

 tips and yellow cilia ; halteres yellow. 



Wings (fig. 31) more brown in front, otherwise grayish; third 

 vein bent back, then recurved forward at tip; fourth vein slightly 

 arched, ending in the apex of the wing; last section of fifth vein 

 extending only about one-third of the distance from the cross vein 

 to wing margin, the length of this portion 7, to wing margin 23, 

 cross vein twenty-seven fiftieths of a millimeter, cross vein some- 

 what arched. 



Ferruile. — Face wide, dark gray; cilia of the calypters black; last 

 section of fifth vein complete to wing margin, a little shorter than 

 the cross vein; cross vein more distinctly clouded than in the male, 

 also a faint, clouded spot on the middle of last section of fourth 

 vein ; posterior tibiae yellow with a black tip ; fore and middle tarsi 

 black from the tip of the first joint; second joint of posterior tarsi 

 a very little shorter than first; fifth joint of middle tarsi plain, a 

 little shorter than fourth. 



Described from one pair, taken October 24, 1926, at Angol, Chile, 

 by D. S. Bullock. 



^T/^e.— Male, Cat. No. 41039, U.S.N.M. 



SYMPYCNUS LONGIPES. new species 



Male. — Length 4.5-4.8 mm. Face very narrow, eyes almost touch- 

 ing on lower part of the face, face and palpi silvery white ; proboscis 

 blackish, front obscured with grayish pollen. Antennae (fig. 32) 

 wholly black, third joint about as long as wide, somewhat triangular; 

 arista inserted at base of third joint; lower orbital cilia white. 



