ghtly
rounded, with the lateral angles armed with short acute spines, the
thorax deeply strangulated posteriorly, the metathorax not spined; the
femora thickly swollen in the middle and very slender at their base and
apex. Abdomen ovate, the first node of the petiole oblong, the second
globose.

_Hab._ Aru.

There is considerable variation in intensity of colouring in examples of
this species, the thorax and legs being sometimes pale ferruginous; in
the specimen described they are dark; every shade of gradation occurs in
different individuals.

4. PODOMYRMA BASALIS. _P._ fusco-ferruginea; abdominis basi pallide
testacea; femoribus medio incrassatis, basi tenuibus.

_Worker._ Length 3 lines. Obscurely ferruginous, the scape of the
antennae, the base of the femora and the tibiae pale ferruginous; the base
of the abdomen pale testaceous; the head and thorax with deep coarse
longitudinal furrows; the flagellum blackish-brown towards its apex,
with the extreme tip pale. Thorax: the anterior margin slightly rounded
with the lateral angles very acute; the femora very thickly incrassate
in the middle; the apex of the tibiae ferruginous. Abdomen smooth and
shining; the basal half pale testaceous, the apical half and the
following segments black; the nodes of the petiole rugose; the first
node elongate, with a short acute tooth at the base above, and a blunt
one beneath.

_Hab._ Aru.

Gen. MYRMICA, _Latr._

1. MYRMICA PARALLELA. _M._ rufo-fulva; antennis pedibusque pallide
testaceis; abdomine fusco-ferrugineo; capite thoraceque longitudinaliter
striatis.

_Worker._ Length 1 line. Head and thorax ferruginous and longitudinally
and evenly striated; antennae and legs pale rufo-testaceous. Thorax
margined at the sides, the disk slightly convex, the anterior margin
transverse, the lateral angles acute; the metathorax with two short
spines; abdomen dark fusco-ferruginous, the nodes of the petiole
subrugose; club of the antennae 3-jointed.

_Hab._ Aru.

2. MYRMICA SCABROSA. _M._ nigra; capite thoraceque scabrosis,
metathorace bispinoso, abdomine ovato laevi.

_Worker._ Length 1 line. Black; the head, thorax, and nodes of the
petiole roughened; the mandibles, flagellum and tarsi rufo-testaceous;
the lateral angles of the prothorax acute, the sides narrowed slightly
to the base of the metathorax, the spines on the latter acute; nodes of
the petiole globose. Abdomen ovate, smooth and shining; club of the
antennae 3-jointed