50 
Psyche 
[April 
Wainfleet, Ontario, July 20 and 26, 1924; two females at Ridge- 
way, Ontario, July 24, 1910; one at Buffalo, October, 18, 1910, 
and one female at Needles, California, February, 18, 1915. 
Type in the author’s collection. 
Hydrophorus lividipes new species. 
Male: Length 4 mm.; of wing 5 mm. Face wide with silvery 
white pollen, the blue-green ground color showing through a 
little on upper portion. Palpi black with abundant black hair. 
Front opaque with brown pollen. Antennae black, short; third 
joint scarcely as long as wide. Beard rather long, yellowish; 
the black orbital cilia extend down nearly to the lower margin of 
the eye. Cheeks wide, extending lobe-like below the eyes, about 
as long as the palpi. 
Dorsum of thorax and its pollen brown; pleurae green with 
white pollen, bare, one propleural bristle on each side and several 
pale hairs below them; two pairs of scutellar bristles. Dorsum of 
abdomen brown with slight green reflections and brown pollen; 
its sides shining green with only a little white pollen on lower 
edges; hairs on first segment long and white; on the others short, 
black. Hypopygium and its pollen brown, its appendages 
small, extending downward, scarcely as long as wide, with a little 
point at tip extending forward, fringed with short hair. 
Fore coxae green, anterior surface with white hair and pollen 
and a row of about five small black bristles of equal length on 
outer edge of apical half; middle and hind coxae black with 
white pollen. All femora and tibiae dark blue-green with black 
hair, each with several small bristles below. Anterior femora 
thickened, narrowed towards their tips; I can see only one row 
of spines on lower surface, which are on the anterior edge and 
placed rather far apart (there may be another row), they also 
have pale hair on lower surface, fore tibiae with pale hair on the 
sides. Tarsi black with brown pollen; first joint of middle and 
hind pairs with very small spines below, the latter also have pale 
hair on lower surface. Joints of fore tarsi as 36-17-15-12-13; of 
middle ones as 44-27-21-15-16; those of posterior pair as 48-30-23- 
15-15. Pul villi of all tarsi large, pale in color. Calypters yellow 
