AUSTRALIAN SPECIES OF RHYTIDOPONERA MAYR 
23 
6. Scape twice as long as second segment of funiculus. Node 
high and convex behind. Spine thorn-like, directed back- 
ward, twice as long as broad at base. Gaster very finely 
and densely punctate-reticulate. Blackish-brown. 11 mm. 
glabrior For. 
7. Scape barely as long as second segment of funiculus. 
Petiole slender, almost parallel, convex behind. Spine 
long, broad and sharp. Postpetiole and gaster very finely 
and densely reticulate. Reddish-brown. 11 mm 
stridulator sp. nov. 
8. Scape slightly longer than second segment of funiculus. 
Node almost straight, feebly convex from apex to base 
of stalk. Spine slender and sharp, fully twice as long as 
broad at base. Node and postpetiole finely striate trans- 
versely. Gaster smooth and shining, some obsolete striae 
behind. Reddish-brown, gaster darker. 9' 5 mm. 
nodifera Em. 
9. Scape one-fourth longer than second segment of funiculus. 
Node strongly convex, longer than stalk in front, spine 
very slender and sharp, four times as long as broad at base, 
directed backward. Gaster very densely reticulate. 
Blackish-brown. 10-5-11 mm .. foveolata Craw. 
10. Scape slightly shorter than second segment of funiculus. 
Node highest and convex behind, sloping gradually in 
front, spine slender and sharp, one-third longer than broad 
at base. Node and gaster finely striate transversely. 
Brown, with metallic violet sheen. Gaster bright metallic 
green or blue-green. 7-5-8 mm violacea For. 
11. Head and thorax finely punctate-rugose 18 
12. Scape as long as second segment of funiculus. Node very 
feebly convex, almost straight. Spine very short and 
sharp. Gaster smooth and shining. Chocolate brown, 
gaster lighter. 10 mm cristata Mayr 
13. Scape slightly shorter than second segment of funiculus. 
Node low, broadly convex. Spine slender and sharp, twice 
as long as broad at base. Node and gaster very finely 
and densely punctate-reticulate. Chocolate brown. 11 mrn. 
punctiventris For. 
14. Scape as long as second segment of funiculus. Petiole 
convex above, almost parallel, spine very long, slender 
and sharp. Head finely and irregularly rugose, with some 
large, shallow punctures. Postpetiole and gaster very 
finely and densely reticulate. Blackish-brown. 10-5 mm. 
aciculata Sm. 
15. Scape one-eighth shorter than second segment of funicu- 
lus. Node convex behind, sloping gradually downward in 
front. Spine thick and sharp, twice as long as broad at 
base. Reddish-brown, gaster darker. 9-5-10 mm. .. .. 
rufonigra sp. nov. 
16. Scape one-third shorter than second segment of funiculus. 
Node very little higher than stalk, feebly convex. Spine 
short and tubercle-like. Brown. 9-5-10 mm levior Craw. 
