70 
Pscyhe 
[April 
deterus Loew; it very much like that species in the form of the 
hypopyginal lamellae and structure of the legs and feet, but differs in 
having only four or five of the lower orbital cilia yellow, in 
deterus the lower orbital cilia are grayish white, not yellow and 
the pale cilia reach above the middle of the eye. 
Dolichopus inter jectus sp. nov. 
Male; Length 4 mm.; of wing 3.5 mm. Face rather nar- 
row, silvery white. Front shining green. Antennae wholly 
black; third joint a little longer than wide, obtusely pointed at 
tip. Lower half of the orbital cilia whitish. 
Thorax dark shining green; pleurae with whitish pollen. 
Abdomen green with slight bronze reflections. Hypopygium 
black with green reflections; its lamellae of moderate size, some- 
what oval in outline, whitish with rather wide black border on 
apical margin, which is jagged and bristly, upper edge fringed 
with a few short black hairs. 
Coxae, legs and feet black; fore and middle trochanters 
and all knees yellow. Fore coxae covered with black hairs on 
their anterior surface. Middle and hind femora each with one 
preapical bristle, the latter nearly bare below. Hind tibiae 
slightly thickened, more so at tip. Fore tarsi about one and a 
fourth times as long as their tibiae, first joint fully as long as 
the following three taken together, fifth nearly as long as the 
second, fourth the shortest. Middle tibiae with one large bristle 
below at apical third. Middle tarsi about equal to their tibiae 
in length, their first joint without a bristle above. Calypters 
and halteres yellow, the latter with whitish cilia. 
Wings grayish, tinged with brown in front of third vein; 
costa with a small knot-like enlargement at tip of first vein; last 
section of fourth vein a little bent before its middle; hind mar- 
gin of wing not indented at tip of fifth vein; anal angle of wing 
prominent. 
Female; Agrees with the male, except that the face is wider 
and the white is scarcely silvery; third antennal joint not longer 
