| 44 MR. F. SMITH ON HYMENOPTEROUS INSECTS 
sub-ovate, the metathorax truncate with the margin of the truncation 
* acute ; the prothorax with two short acute spines. Abdomen globose ; 
the node of the peduncle widely emarginate above and subdentate at 
the angles. (PI. I. fig. 23.) 
Hab. Celebes (Tondano). 
Gen. Opontomacuves, Latr. 
1. Odontomachus rixosus, Smith, Proc. Linn. Soc. 1. 64. 1. 
Hab. Ternati; Singapore. 
2. Odontomachus seevissimus, Smith, Proc. Linn. Soc. Supp. v. 102. 1. 
Hab. Menado; Bachian; Ceram. 
3. ODONTOMACHUS TYRANNIcus. O. ferrugineus, levis nitidus ; 
thorace oblongo, metathorace transversim striato ; abdominis pedun- 
culo unispinoso. 
Worker. Length 4 lines to the tips of the mandibles. Ferruginous, 
very smooth and shining; the head widest at the insertion of the eyes, 
more than usually so; the usual deep depressions between the eyes 
and the prominence at the sides of which the antennz are inserted 
very smooth without the faintest striatiop, the prominence slightly 
striated longitudinally ; the head deeply emarginate behind; the man- 
dibles finely serrated on their inner margins, and terminating in two 
stout teeth, which form a fork abruptly bent inwards. The antennz 
and legs of a paler colour than the body ; the metathorax transversely 
striated, the mesothorax above longitudinally so ; the spme on the node 
of the peduncle of the abdomen short and acute. (PI. I. fig. 4.) 
Hab. Celebes. 
Fam. PONERID A, Smith. 
Gen. Ponrra, Latr. 
1. Ponera rugosa, Smith, Proc. Linn. Soc. ii. 66. 5. 
Hab. Celebes; Borneo. 
2. Ponera parallela, Smith, Proc. Linn. Soc. iv. 143. 3. 
Hab. Celebes; Aru. 7 
3. Ponera leviceps, Smith, Proc. Linn. Soc. ui. 69.13 9. 
Hab. Celebes ; Bachian ; Borneo. 
4. PonERA MALIGNA. P. capite subquadrato, margine posteriore trans- 
verso; thorace abdomineque lvigatis, nitidis; mandibulis, antennis 
tarsisque pallide ferrugineis. 
Female. Length 54 lines. Jet-black, smooth and shining ; the poste- 
rior margin of the head transverse, with the lateral angles acute; the 
clypeus elevated ; the head is sprinkled with distant punctures ; its 
anterior margin, the mandibles, and antennz ferruginous; the man- 
dibles porrect, with two or three teeth at their apex and a larger one 
on their inner margin about one-third of their length from their apex. 
