ES. _N._ nigra pedibus flavis, abdomine cinereo fasciato,
alis hyalinis.

_Female._ Length 3-1/4 lines. Black; the face and cheeks densely clothed
with short cinereous pubescence, the vertex thinly so; the margins of
the prothorax, mesothorax and scutellum with a line of pale ochraceous
pubescence, the disk of the thorax thinly covered with short pubescence
of the same colour, the emargination of the metathorax as well as its
sides with longer pubescence of the same colour; the base of the abdomen
and basal margin of the second and following segments covered with short
cinereous pubescence. The flagellum beneath fulvous; the mandibles
ferruginous. The legs reddish-yellow, with the coxae and base of the
femora black; the wings hyaline; the tegulae yellow, the nervures pale
testaceous.

_Hab._ Celebes.

3. NOMIA FORMOSA. _N._ capite thoraceque nigris; abdomine chalybeo;
marginibus apicalibus segmentorum caeruleo fasciatis.

_Female._ Length 5-1/2 lines. Head and thorax black and very closely
punctured; the face covered with griseous pubescence; the clypeus with a
central longitudinal carina. Thorax: the apical margin of the prothorax,
the margins of the scutellum, and the sides of the metathorax covered
with a dense short ochraceous pubescence; the disk of the thorax thinly
sprinkled with short black hairs; the posterior tibiae obscurely
ferruginous; the tarsi ferruginous; the legs covered with bright
golden-yellow pubescence; wings subhyaline, the nervures ferruginous;
the tegulae yellow with a fuscous stain in the middle. Abdomen obscurely
chalybeous, closely punctured, the two basal segments strongly so; the
apical margins of the segments with smooth shining narrow blue fasciae.

_Male._ Closely resembling the female, but with the legs black; the
posterior femora incrassate, the tibiae narrow at their base and broadly
dilated at their apex, which, as well as the calcaria, are pale
testaceous.

This species closely resembles a species from North China, _N.
chalybeata_, Westw. MS., from which it is readily distinguished by the
form of the fourth ventral segment, which is notched in the middle,
rounded, and then emarginate with the lateral angles rounded; in the
species from China the margin is arched, and fringed with fulvous
pubescence.

4. NOMIA HALIOTOIDES. _N._ nigra, pube cinerea tecta, abdominis
segmentis intermediis pube alba fasciatis.

_Female._ Length 4-1/2 lines. Black; head and thorax opake, and thi