so the posterior
femora, pale ferruginous; the wings subhyaline, the nervures dark
fuscous. Abdomen: the apical margins of the segments obscurely and
narrowly rufo-piceous, the apex ferruginous.

_Hab._ Celebes.

Gen. MACROMERIS, _St. Farg._

1. Macromeris splendida, _St. Farg. Hym. iii._ 463. 1. [Symbol: male].

_Hab._ India, China, Malacca, Borneo, Java, Celebes.

Gen. MYGNIMIA, _Smith_.

1. Mygnimia iridipennis, _Smith, Journ. Proc. Linn. Soc._ ii. p. 98.

_Hab._ Celebes, Borneo.

This insect, a female, is 5 lines larger than _M. iridipennis_; but I
can point out no other distinction beyond a slight difference in the
colour of the wings: the specimen from Borneo has a metallic
bluish-green iridescence, the Celebes insect has a violet iridescence;
notwithstanding which I am inclined to regard them as one species.

2. MYGNIMIA FUMIPENNIS. _M._ aurantiaco-rubra, alis obscure fuscis.

_Female._ Length 9 lines. Orange-red; the anterior margin of the clypeus
entire; the labrum produced, its anterior margin widely emarginate; eyes
large, black and ovate. Thorax: the posterior margin of the prothorax
rounded; the mesothorax with a longitudinal fuscous stripe on each side,
widest anteriorly; the metathorax truncate; above, transversely striate;
the tibiae and tarsi spinose; wings dark fuscous, with a pale
semitransparent macula at the base of the second discoidal cell and a
dark fuscous macula beyond; the insect entirely covered with a fine
orange-red downy pile.

_Hab._ Celebes.

Fam. SPHEGIDAE.

1. SPHEX PRAEDATOR. _S._ niger, rude punctatus, facie pube fulva vestita;
alis fuscis cupreo iridescentibus.

_Male._ Length 10-1/2 lines. Black; the head and thorax opake. Abdomen
shining blue-black. The face with silvery pile on each side of the
clypeus, and sprinkled with erect black hairs. Thorax: the posterior
margin of the prothorax with a line of silvery pubescence; the
metathorax with a short light-brown pubescence at the apex, and thinly
clothed with black hairs; wings dark brown, with a brilliant violet
iridescence. Abdomen blue-black, smooth and shining.

_Hab._ Celebes.

2. AMMOPHILA INSOLATA. _A._ nigra, scapo mandibulis, pedibus,
abdominisque segmentis primo et secundo ferrugineis; alis subhyalinis.

_Female._ Length 8-1/2 lines. Black; the scape, the base of the
flagellum beneath, the anterior margin of the clypeus and the mandibles
ferruginous; the latter black at their apex. Thorax: the proth