5. Megachile tuberculata ^HNS.

M. nigra; capite thoraceque punctatis, mandibulis fortibus et porrectis; clypeo tuberculato; alis fulvohyalinis; abdomine totius nigro.

Female. Length 10 lines. Black: clothed with black pubescence on the vertex and disk of the thorax, on the abdomen above it is sparing; the clypeus produced in the middle, forming a large prominent tubercle; the mandibles long, very stout and prominent, with a stout bluntish tooth on their inner margin near their base, and having three large teeth at their apex, the apical one acute. The outer margin of the tegulae ferruginous; the wings fulvo-hyaline, the nervures ferruginous, their apical margins with a fuscous border. Abdomen: the basal segment densely clothed with sooty-black pubescence; beneath, densely clothed with black pubescence.

Hab. Borneo (Sarawak).