26 PEOCEEDINGS OF THE NATIONAL MUSEUM vol. 74 



Wing slightly brownish, bend of fourth vein rectangular with a 

 slight appendage; beyond the right angle the vein is concave, thence 

 straight in a diagonal direction toward the costa. Third vein bristly 

 almost to cross vein. Calypters white. 



Length, 11 mm. 



Described from one male, " Brasilia, Alte Sammlung," another 

 label reads " ad. Elachipalpus det. B. B." 



Not represented in the United States National Museum. 



COPECRYPTA ORBITALIS, new species 



Male. — Front at vertex 0.35 of head width; two pairs of verticals, 

 no ocellars, upper two f rentals reclinate, only five anterior to them 

 in a single row, two large proclinate orbitals. Ground color of para- 

 frontals black, of parafacials, face and cheeks pale, all overlaid with 

 golden pollen; upper half of the parafrontals with thinner pollen 

 and rather dense erect black hair; parafacial with two stout macro- 

 chaetae and some pale pile, the latter continuing on the cheek ; beard 

 3^ellow. Antennae red except apical part of third joint ; second joint 

 fully equal to third, the latter convex in front, more straight behind, 

 rather pointed, not very broad. No palpi; proboscis beyond joint 

 barely equal to height of head. Thorax black with thin plumbeous 

 pollen on dorsum in best specimens, nearly shining in others; the 

 pollen shows two narrow submedian black stripes in front, between 

 two wilder ones. Acrostichal o, 4; dorsocentral 3, 4; scteuUum with 

 two large lateral with a small between them, and a small decussate 

 apical pair. SternoiDleiu'al 4, wath a stout pteropleural about equal 

 to the largest scutellar. Calypters yellow. Abdomen sub-shining 

 black with fourth segment deep red on apical half dorsally. less 

 below, and a trace of red on the sides of the second segment. The 

 pollen and bristles are as in macrocera. Legs black; front pul villi 

 distinctly elongated; several bristles on outer front side of middle 

 tibia, hind tibia with a few on outer and inner hind sides. Wings 

 distinctly brownish, fourth vein bent at right angle; concave imme- 

 diately beyond the angle, thence straight in a rather upright course 

 to the margin; third vein bristlj'^ less than halfway to cross vein. 



Female. — Front of exactly the same width as in the male, but the 

 third antennal joint smaller and less convex, about three-fourths 

 as long as second. The abdomen is broader and has no trace of red 

 at the sides. The three intermediate joints of the front tarsi are 

 distinctly flattened. 



Length, 7-8 mm. 



Described from two males and three females (including the type) 

 Posorja, Ecuador (Prof. F. Campos E.) ; one female from JPeru 

 (Townsend) ; and one male from Brazil (Coll. Winthem.) which 



