19231 Ants of the Genera Myopias and Acanthoponera 
191 
5. Anterior corners of pronotum angular; epinotal spines 
straight and divergent; postpetiole and gaster shining 
and sparsely punctate. Length 6 mm. (Argentina). 
var. wagneri Santschi. 
Anterior corners of pronotum more rounded; petiolar 
spine somewhat more erect. Length 5.3mm. (Mexico). 
var. minor Forel. 
6. Australasian species ; dark brown 7 . 
Neotropical species; black, brownish yellow, or brownish 
red 12. 
7. Petiole armed with an erect spine above; anterior corners 
of pronotum dentate. Length 4 mm. (New South Wales). 
lem sp. nov. 
Petiole unarmed, anterior corners of pronotum rounded. 
Length less than 4 mm 8 . 
8. Petiolar node concave behind, the posterior border of its 
summit distinctly produced backwards 9 . 
Petiolar node truncated behind, its posterior border not 
produced 10 . 
9. Larger (3. 2-3. 5 mm.); head coarsely rugose; epinotum 
scarcely dentate (New Zealand) hrouni Forel. 
Smaller (2.3-3 mm.); head finely and distinctly rugose; 
epinotum more distinctly dentate; legs paler. (New 
Zealand) subsp.. kirki subsp. nov. 
10. Front of head rather finely rugose; postpetiole and gaster 
shining, punctate and sparsely foveolate. Length 2.75- 
3.2 mm. (Queensland; South Australia) Emery. 
Front of head more coarsely rugose; postpetiole and gaster 
subopaque 11. 
11. Postpetiole and gaster densely punctate. Length 3.6 mm. 
(Queensland; South Australia) .... var. hilaris Forel. 
Postpetiole and first gastric segment longitudinally reti- 
culate-rugose. Stature smaller (2.5-3mm.). (New South 
Wales) var. scahra var. nov. 
12. Black; petiole without a distinct tooth on its posterior 
border. Length 3. 3-3. 7 mm. (Chile) . .carinifrons Mayr. 
Brownish yellow or brownish red; petiole usually armed 
with a distinct tooth or projection 13 . 
