298 PROCEEDISQS OF THE NATIONAL MUSEUM. vol.43. 



first vein and middle of discal cell, outer cross vein at two-thirds 

 its own length from tip of fifth vein, third and fourth veins parallel 

 for about one- third the length of last section of fourth vein; hal teres 

 entirely yellow. 



Length, 2^ mm. 



One male, Kaslo, British Columbia (R. P. Currie). 



Allied to unguiculatus Crcsson. 



Type.— Cat. No. 14806, U.S.N.M. 



PIPUNCULUS METALLESCENS, new species. 



Male. — Black; eyes touching for as long a space as half the length of 

 frons, frons silvered, face silvered, as broad as frons at above anten- 

 nae, parallel-sided, antennae black-brown, third joint barely twice as 

 long as its greatest breadth, shortly but sharply acuminate and not 

 distinctly paler at apex, arista with glossy brown, oval swelling at 

 base, occiput very distinctly silvered, except just behind ocelli; 

 thorax gray brown pollinose, whitish on the lateral margins, nearly 

 bare, pleurae yellow, with short pale hairs, scutellum glossy black 

 except at base, and almost bare, post-notum distinctly gray polli- 

 nose especially laterally; abdomen short and broad, with a distinct 

 greenish luster, lateral comb on first segment strong and black, all 

 segments with scattered short hairs, hypopygium with distinct cleft 

 to right, viewed laterally longer than fifth segment, but from above 

 only half as long, ventral processes concealed ; legs black, trochanters 

 slightly, extreme apices of femora, basal third and extreme apices 

 of tibiae, and all tarsi except last joint yellowish, no large bristles 

 anywhere, those on mid femora on apical half of ventral surfaces 

 very small; wings clear, third division of costa above one-half as 

 long as fourth, small cross vein at opposite midway between end of 

 first and second veins and distinctly beyond middle of discal cell, 

 outer cross vein at nearly its own length from end of fifth vein; 

 halteres yellow. 



Length, 2 mm. 



One male, Chinandega, Nicaragua (C. F. Baker). 



Belongs to the subvirescens group. 



Type.— Cat. No. 14807, U.S.N.M. 



PIPUNCULUS CAUDELLI. new species. 



Male. — Eyes separated by a narrow, black frontal stripe which 

 at its narrowest part is about one-third as broad as frons at above 

 antennae, the raised central ridge narrowly intersecting the upper 

 half of the silvered frons, face broader than frons, silvery, widening 

 toward mouth, antennae black except the apical half of third joint 

 which tapers to an acuminate apex and is yellowish white, occiput 

 silvered except above and the ocellar region which is shining black, 



