under a magnifying
power of low degree, the surface of _G. dispersa_ will be seen
distinctly to differ from that of any of the others; it is covered with
flat scales, fringed with short cilia. The length of the animal,
including the arms, is about 2-1/4 inches.

Catalogue of Hymenopterous Insects collected at Celebes by Mr. A. R.
WALLACE. By FREDERICK SMITH, Esq., Assistant in the Zoological
Department, British Museum. Communicated by W. W. SAUNDERS, Esq.,
F.R.S., F.L.S.

[Read April 15th, 1858.]

This collection of the Hymenoptera of Celebes is specially interesting,
as adding greatly to our knowledge of the geographical range of many
well-known species, while the additions made to the Fossorial group
contain many of great beauty and rarity. A new species belonging to the
tribe of Solitary Wasps, _Odynerus clavicornis_, is perhaps the most
interesting insect in the collection; this Wasp has clavate antennae, the
flagellum being broadly dilated towards the apex, convex above and
concave beneath. I am not acquainted with any other insect belonging to
the Vespidious group which exhibits such an anomaly.

Fam. ANDRENIDAE, _Leach._

Gen. SPHECODES, _Latr._

1. SPHECODES INSULARIS. _S._ niger, abdominis segmentis primo secundo et
tertio (basi) rubris; alis hyalinis.

_Male._ Length 3-1/2 lines. Head and thorax black, closely and strongly
punctured; the face below the antennae with silvery-white pubescence; the
joints of the flagellum submoniliform; the mandibles ferruginous.
Thorax: the tegulae pale rufo-testaceous, wings hyaline, the nervures
ferruginous; the metathorax coarsely rugose; the articulations of the
legs and the tarsi ferruginous. Abdomen: the first, second, and base of
the third segments red, the apical ones black, very finely and closely
punctured, with the apical margins of the segments smooth and shining; a
black spot in the middle of the basal segment.

_Hab._ Celebes.

Gen. NOMIA, _Latr._

1. NOMIA PUNCTATA. _N._ nigra nitida punctata, alis nigro-fuscis.

_Male._ Length 4-1/2 lines. Shining black: head and thorax coarsely
punctured, the metathorax ruggedly sculptured, truncate at the apex, the
truncation and sides smooth with a few fine punctures; the abdomen
closely and rather finely punctured, the apical margins of the segments
smooth and shining. The tips of the mandibles, the tarsi and apex of the
abdomen rufo-testaceous, the wings fuscous.

_Hab._ Celebes.

2. NOMIA FLAVIP