46 bulletin: museum of comparative zoology. 



its anterior margin. Mandibles rather large, triangular, strongly bent at the 

 base, flattened, with straight lateral and broad, dentate apical borders. Clyp- 

 eus extremely short and transverse. Frontal carinae prominent, vertical, 

 approximated and rounded, confluent but not truncated behind in a depression 

 continuous with the antennal foveae. In front between the carinae there is a 

 small, acute, median tooth. Frontal groove absent. Cheeks with a strong 

 carina, terminating anteriorly in a sharp, rectangular tooth or projection. 

 Antennae short; scapes rapidly enlarging towards their apices, which reach 

 back to a line connecting the anterior orbits; funiculi thick, all the joints 

 except the last decidedly broader than long, joints 1-6 much broader than long, 

 joints 7-10 subequal, somewhat longer, terminal joint very large, glandiform, 

 as long as the four preceding joints together. Thorax narrower than the head, 

 about 2 1 times as long as broad, as broad through the epinotum as through 

 the pronotum, narrowed in the mesoepinotal region; with indistinct, slightly 

 impressed mesoepinotal suture. Pronotum subrectangular in front, its ante- 

 rior and inferior borders strongly marginate. In profile the dorsal outline 

 of the thorax is horizontal and very feebly convex. Epinotum from above a 

 little longer than broad, rather rounded on the sides, its declivity sloping, 

 slightly concave and strongly marginate above and on the sides. Petiole 

 narrower than the epinotum, distinctly longer than broad, as broad in front 

 as behind, with feebly rounded sides and dorsal surface, the former slightly 

 carinate below; its ventral surface anteriorly with a prominent, compressed, 

 triangular tooth. The anterior surface is strongly truncated and with a sharp 

 carina above. Postpetiole a little longer than the petiole but distinctly 

 broader, longer than broad and broader behind than in front, with evenly 

 convex dorsal, ventral, and lateral surfaces, its anterior border strongly margin- 

 ate, with sharply angular corners. Gaster elongate, first segment shaped 

 like the postpetiole but larger; pygiclium truncated and slightly concave 

 above, bordered with numerous prominent spinules. Sting large. Legs with 

 short tibiae, those of the middle and hind legs not longer than the rbetatarsi; 

 hind coxae without a lamelliform expansion at the tip on the inner side. 



Shining; mandibles opaque, striatopunctate; cheeks very coarsely rugose. 

 Surface of the body with very sparse, coarse, piligerous punctures, longitudi- 

 nally confluent on the dorsolateral surfaces of the petiole. 



Hairs moderately long, bristly, erect, pale yellowish, sparse on the body, 

 sparser on the scapes and legs. Pubescence absent, except on the funiculi 

 tibiae, and tarsi. 



Black; mandibles, funiculi, tarsi, tips and bases of scapes, femora, and 

 tibiae, pygidium and sting deep red. 



A single specimen from Kuching (John Hewitt). 



I have redeseribed this insect which is the type of the genus, as the 

 worker has not been seen within recent years and because Smith's 

 description is antiquated and incomplete. Emery described and 



