new Ants from Australia. 445 
Thorax in shape not unlike the preceding, with similar 
triangular teeth at the shoulders of pronotum, but the spines 
are shorter. It is broader than long, not greatly wider in 
front than behind, the spines are subequal, the lateral pairs 
joined by a translucent border. The posterior central pair 
are slightly shorter than the outer ones. Epinotal spines 
long and thin. 
Both nodes in profile subquadrate ; from above the first 
is subquadrate, the second uearly 14 as broad, broadest and 
almost straight in front, narrowing in an even curve behind, 
the whole being not unlike a half-moon with the points 
rounded. Gaster of ordinary form. 
Mandibles striate. Clypeus smooth and shining in centre, 
striate at sides. Frontal area smooth and shining. Front 
half of head with irregular longitudinal ridges, shining in 
between, merging as the front is reached into coarse reticu- 
lation, until at the occiput the sculpture consists of more or 
less hexagonal pits, shining at the bottom. 
On the promesonotum the process is reversed, the pits 
being in front and the ridges behind. ‘The petiole is 
similarly pitted. 
Gaster smooth and shining, but superficially reticulate. 
. Serpentine River, W.A. (J. Clark, no. 35). 
Type W. C. C. coll. 
Cuanee or Name.—Meranoplus minor, Crawley (1918), 
cannot stand, as there is already a M. hirsutus, race minor, 
Forel (1902). I therefore propose the name M, minimus 
for the former. 
Meranoplus w111, sp.n. (Fig. 9.) 
3. Length 2°8 mm. 
Entirely ferruginous. 
Head as long as broad, widest behind, slightly narrowing 
in front, less so than in ferrugineus, posterior border 
concave. Front portion of clypeus slightly concave, the 
anterior border almost straight. Mandibles with four teeth. 
Frontal carine slightly curving in at level of eyes, which 
ure well behind the middle of head. Antennal scape 
swollen beyond middle ; club of funiculus longer than the 
rest of the funiculus. 
Promesonotum considerably broader than long, broadest 
in front. Shoulders of pronotum terminated by large 
triangular teeth, the sides parallel, with a blunt dentiform 
