3. Cataulacus reticulatus ^HNS.

C. niger, delicatule reticulatus, praesertim in abdomine; marginibus capitis thoracisque lateribus crenulatis; thorace spinis duabus validis postice armato.

Worker. Length 1 1/2 - 2 lines. Black; head and thorax reticulated; antennae short, thick and clavate; the clypeus widely emarginate; the sides of the head produced into a sharp angle in front of the eyes; behind the eyes the margin is crenulated, the posterior lateral angles acute. Thorax: the anterior margin slightly rounded; the sides rounded and narrow to the metathorax, with a short tooth anteriorly and posteriorly; the thorax produced behind into two elongate, lateral, acute spines; the anterior tibiae and tarsi and the apical joints of the intermediate and posterior tarsi, ferruginous. Abdomen: oval, margined, emarginate in front and very delicately reticulate.

Var. a. minor. The scape, apical joint of the flagellum, the margin of the head before the eyes and the legs, ferruginous.

Hab. Borneo (Sarawak).

This species somewhat resembles the C. Taprobanae, but is different in sculpture and form.