1923] New Spvcies of North American Dolickopodidce 69 
Dolichopus uliginosus sp. nov. 
Male: Length 4.7 mm,; of w'ihg 4 mm. Face rather narrow, 
yellowish. Front shining green. Antennae wholly black; third 
joint about as long as wide, scarcely pointed at tip. Orbital 
cilia black with the four lowest ones on each side yellow. 
Thorax shining blue-green with violet reflections; pleurae 
slightly dulled with gray pollen. Abdomen shining green 
with black incisures and with white pollen on its sides. Hypo- 
pygium and its lamellae black, the latter somewhat triangular 
in outline and about as wide as long. 
Coxae, legs and feet black. Fore coxae with black hairs on 
their anterior surface. Middle and hind femora each with one 
preapical bristle, the latter ciliated on lower inner edge with 
long black hairs, which appear nearly white in certain lights, 
the longest of these hairs scarcely as long as the width of the 
femora. Hind tibiae with brown pollen on inner surface, which 
is conspicuous when viewed obliquely, they are distinctly 
thickened almost from their base. Middle tibiae with one 
large bristle just beyond the middle on their lower surface. 
Anterior tarsi scarcely as long as their tibiae, the first joint as 
long as the remaining four taken together, fifth as long as second, 
fourth joint the shortest. Middle tarsi as long as their tibiae, 
the first joint without a bristle above. Calypters yellow with 
black cilia. Knob of the halteres yellow, their stem brown. 
Wings grayish; costa with a slight knot-like enlargement at 
tip of first vein; fourth vein a little bent just before the middle 
of its last section; hind margin of wing scarcely indented at tip 
of fifth vein; anal angle of wings rounded, not prominent, the 
hind margin being nearly evenly rounded. 
Described from one male taken at the Biological Station 
at Nanaimo, B. C., June 23, 1920, by E. P. Van Duzee. Type 
in the California Academy of Sciences. 
This would run in the table of species in the Bulletin U. S. 
National Museum No. 116, p. 11, couplet 8, of group C, to 
