NOTES ON AUSTRALIAN ANTiS. 
with four segments. Clypeus large, convex, produced and convex in front. 
Labium produced beyond clypeus, sharply pointed in front. Frontal area 
large. Frontal carinae erect, narrow and almost parallel, not covering the 
antennal insertions. Antennae long and slender, twelve segments ; scapes 
longer than head, slightly thickened toward apex ; funiculus filiform, second 
segment longest. Eyes large and convex, placed at middle of sides of head. 
No ocelli. Thorax not margined. Pro-mesonotal suture sharply impressed. 
Meso-epinotal suture deep and wide. Petiole elongate, with a large node 
behind ; ventral surface with a strong sharp tooth-like projection in front. 
Postpetiole united with gaster without traces of a constriction, bell-shaped in 
front ; the ventral surface with a long sharp tooth-like projection in front. 
Gaster ovate, longer than broad. Sting very long and stout. Legs rather 
long and robust. Anterior tibiae with one long broad pectinate spur and two 
short stout bristles. Middle tibiae with two long sharp bristle-like spurs. 
Posterior tibiae with one long broad pectinate spur and one long thin bristle- 
like spur. Fourth segment of all tarsi bilobed. Claws stout, bidentate. 
Genotype, N othomyrmecia macrops, sp. nov. 
Near Myrmecia from which it is readily separated by the 
form of the head, mandibles, clypeus, eyes and the lack of ocelli 
as well as the postpetiole which is not constricted behind to 
form a second node. It is not near any other existing genus. 
[ 18 ] 
