302 
[November 
ferruginous. Wings fusco-hyaline, nervures ferruginous, stigma paler; 
Legs ferruginous; cox 80 except tips, and a stripe on the posterior femora 
within, black. Abdomen ferruginous; finely, densely and uniformly 
punctured; extreme base above slightly blackish, and the posterior 
margins of the segments above with a darker stain; on each side of 
the second segment, near the base, an irregular yellowish spot; on 
the middle of the third segment a transverse yellowish line, deeply 
excavated on each side anteriorly and somewhat attenuated on the disk 
posteriorly; on the fourth segment an indistinct, narrow, yellow line, 
and on the fifth segment an oblong yellow spot with the posterior mar¬ 
gin silvery-white in certain lights; beneath ferruginous, with an indis¬ 
tinct yellowish stain on the third segment. Length 4 lines. 
Hah. District of Columbia. One specimen. Collection of Mr. Ed¬ 
ward Norton. 
Differs principally from all allied species by the uniform and distinct 
punctation of the abdomen. The only specimen I have seen of this 
species has the second submarginal cell obliterated in both superior 
wings. 
23. N. depressa n. sp. 
Female .—Head finely punctured, ferruginous; a short line extend¬ 
ing half-way down the sides of the clypeus, a large patch about the 
insertion of the antennas, a spot enclosing the ocelli, and the posterior 
part of the cheeks and throat, black. Antennae ferruginous. Thorax 
ferruginous, finely and densely punctured, slightly hairy; a longitudi¬ 
nal dorsal line, sides of the collar and of the scutellum, a wide margin 
on each side dividing the pleura and metathorax, a line dowji the 
centre of the metathorax, and a patch beneath immediately behind 
each fore leg, black; a rather deep puncture on each side beneath the 
base of the wings. Wings subhyaline, apical margins clouded, with a 
pale lunule near the tip. Legs ferruginous; base of the femora be¬ 
neath blackish. Abdomen ferruginous; very minutely punctured, shin¬ 
ing; dorsal surface fiattened; basal third of the first segment above 
black, and the posterior margin of the segments with a darker stain; 
on each side of the second segment at base a rather large, angular, 
yellow macula, pointed within ; a small, oblong, yellow spot below it 
on the third segment, and at the base of the fifth segment two small 
yellowish spots, immediately behind these spots the segment is suddenly 
