1. Myrmica longipes ^HNS.

M fusco-pallida, gracilescens; capito in collum angustato; thorace compresso, metathorace bispinoso; pedibus elongatis; abdominis nodis duobus globosis.

Worker. Length 2 1/2 lines. Dark brown: the legs testaceous, the tarsi and tips of the antennae pale testaceous; antennae longer than the body, very slender, the scape, and also the flagellum, slightly thickened towards their apex; head much wider than the thorax, narrowed behind the eyes, and prolonged into a short neck; the mandibles rufo-testaceous. Thorax: the prothorax elongate, narrowed anteriorly into a short neck, slightly swollen posteriorly; the division between the meso- and meta-thorax deeply impressed; the metathorax with two short acute upright spines. Abdomen ovate, pedunculate, the peduncle formed of two nodes, the first smaller and less elevated than the second, each having a short footstalk.

Hab. Singapore. Borneo.

Notwithstanding the remarkable form of this species, its long slender antennae and legs, the prolongation of the prothorax into a neck, &c, all of which appear to warrant the formation of a new genus for its reception, yet, not being acquainted with either of the perfect sexes, I do not feel justified in removing it from the genus Myrmica ^HNS.