36 
Psyche 
[March 
TABLE OF THE NORTH AMERICAN SPECIES OF ME- 
DETERUS, WITH DESCRIPTIONS OF THREE NEW 
FORMS. 
By M. C. Van Dttzee, 
Buffalo, N. Y. 
Medeterus longinervis, new species. 
Male; 2-2.2 mm. Face black; front brown. Antennae 
black, third joint small; artista apical; lower orbital cilia whitish. 
Thorax and abdomen black with green reflections; dorsum 
of thorax more brown with gray pollinose vittae; the posterior 
depression reaches the middle of the mesonotum, where the 
acrostichal bristles end, they are in two rows with a slight cop- 
pery vitta between them; one small black bristle above each 
fore coxa; scutellum with two pair of bristles, the outer pair 
half as long as the middle ones; hairs of abdomen and hypopy- 
gium white; hypopygial appendages brownish yellow. 
Coxae black, anterior pair with pale hairs on front surface 
and one small black bristle at tip. Femora blackish; tibiae and 
tarsi yellowish brown, all their hairs white ; middle tibiae with a 
small black bristle at basal fourth and posterior pair with one 
near apical fourth. Joints of hind tarsi as 17-27-14-7-6. 
Wings grayish, veins brown; last section of fifth vein 28, of 
cross-vein 9 fiftieths of a millimeter long. 
Type, male, No. 1887, Calif. Acad. Sci., Taken by Edward 
P. Van Duzee, June 15, 1925, at Olney, Oregon. Two para- 
types were taken at the same time and place and are also in the 
Academy collection. 
Medeterus albosetosa, new species. 
Male: Length 2 mm. Face and front gray with pollen, 
which covers the ground color. Antennae black, the two basal 
joints more brown, third small, scarcely as long as wide, a little 
pointed in the middle; arista apical, orbital cilia whitish. 
