al segment of the abdomen; the spines and hooks black at
the apex. Abdomen ovate.

_Hab._ Aru.

13. POLYRHACHIS HECTOR. _P._ niger et vestitus pube pallide aurea;
prothorace petiolique squamula bispinosis, pedibus ferrugineis.

_Worker._ Length 3 lines. Black; the apex of the scape and the legs
ferruginous; the extreme base of the tibiae and the tarsi black; a stout
acute spine on each side of the prothorax, directed forwards; the thorax
flattened above, its lateral margins raised; the divisions of the
segments very distinctly impressed; the pale golden pubescence on the
abdomen thinner than on the head and thorax. The scale of the petiole
angled at the sides towards its summit, the angles dentate, the upper
margin straight, and at each lateral angle an acute spine, directed
backwards, and curved to the shape of the abdomen; the spines parallel.

_Hab._ Aru.

14. POLYRHACHIS RUFOFEMORATUS. _P._ niger, laevis, nitidus; femoribus
abdominisque squamula ferrugineis.

_Worker._ Length 3-1/2 lines. Black; head oblong; the eyes placed high
at the sides near the vertex, the front very prominent, with two
elevated carinae in the middle, at the outside of which the antennae are
inserted. Thorax: the divisions strongly marked, flattened above with
the sides elevated; the prothorax with an acute spine on each side
anteriorly; the coxae and femora ferruginous, with the apex of the latter
more or less fuscous. Abdomen: the base and the scale ferruginous, the
latter angled at the sides and emarginate above.

_Hab._ Aru.

Gen. PONERA, _Latr._

1. Ponera rugosa, _Smith, Cat. Hym. Ins. Proc. Linn. Soc._ ii. 66. 5.

_Hab._ Aru. Borneo.

2. PONERA SCULPTURATA. _P._ nitida nigra; capite, thorace abdominisque
segmentis primo et secundo profunde striatis, nodo spinis duabus acutis
armato; pedibus abdomineque apice ferrugineis.

_Worker._ Length 5 lines. Black and shiny, the legs obscurely
ferruginous as well as the mandibles; the head strongly and evenly
striated longitudinally. The prothorax with a circular striation above;
behind, the thorax is compressed, the sides being obliquely striated,
the striae uniting and crossing the central ridge of the thorax. The node
of the petiole and basal segment of the abdomen with a curved striation,
the second segment longitudinally striated and depressed at its base,
which is smooth and shining; the basal half of the third segment is
longitudinally striated.

_Hab._ Aru.

This species