308 
[November 
on each side of the third abdominal segment above. The males from 
which the above description is taken, may not belong to this species, 
as they have the yellow spot on each side of the third segment of the 
abdomen conspicuous ; but they are certainly distinct from the males 
which I have placed under JV. hisignata Say; excepting, however, the 
yellow spots on the third abdominal segment, they have every appear¬ 
ance of being the true males of perplexa. 
All the specimens which I have placed under this species have four 
more or less distinct longitudinal ferruginous lines on the thorax above. 
27. N. miniata Smith. 
Nomada miniata, Smith, Brit. Mus. Cat. Hym. ii, p. 250, 9- 
“ Female. Length lines.—Head and antennae red, the apex o 
the mandibles fuscous. The thorax and legs red, the collar, a spot in 
front of the tegulae and a large macula on each side of the metathorax 
yellow, the latter covered with silvery-white pubescence ; two lines in 
the middle of the thorax, another passing over the tegulae and the 
scutellum pale red; the wings hyaline, slightly fuscous at their apical 
margins, the nervures ferruginous. Abdomen entirely red, the second 
segment having on each side an ovate yellow spot; beneath immaculate, 
“ The yellow markings on the thorax are sometimes obsolete. 
“ Hah. Greorgia.'’ 
Unknown to me. 
28. N. Americana Kirby. 
Nomada Americana Kirby, Faun. Bor.-Amer. iv, p. 269, pi. 6, fig. 3. 
“ Body dark ferruginous. Thorax with a longitudinal, mesal, black 
line, less distinct on the metathorax ; breast with a black spot on each 
side; wings as in the rest of the genus, embrowned with a white spot 
near the tip, thighs black at the base on the underside; first segment 
of the abdomen black at the base, and with the second and third brown 
at the apex. Length of body lines. One specimen, taken at Lat. 
65 °.” 
Not identified. 
29. N. valida Smith. 
Nomada valida Smith, Brit. Mus. Cat. Hym. ii, p. 246. 9 • 
“ Female. Length 4 lines.—Black, the anterior portion of the cly- 
peus, and sometimes a dot above, the antennae, labrum, and mandibles 
and orbits of the eyes ferruginous ; the disk of the thorax has on each 
