7}etv Ants from Australia. 445 



Thorax in sliape 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. Epiuotal spines 

 long and thin. 



Both nodes in profile subquadrate ; from above the first 

 is subquadrate, the second nearly 1^ as broad, broadest and 

 almost straight in front, narrowing in an even curve behind, 

 the whole being not unlike a halt'-raoon 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 promesonotnm 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. (7. Clark, no. 35). 



Type W. C. C. coll. 



Change of Name. — Meranoplus minor^ Crawley (1918), 

 cannot stand, as there is already a M. kirsutas, race minor, 

 Forel (1902). I therefore propose the name M. minimus 

 for the former. 



Meranoplus hilli, sp. n. (Fig. 9.) 



5 . Length 2'8 mm. 



Entirely ferruginous. 



Head as long as broad, widest behind, slightly narrowing 

 in front, less so than in ferruyiiieus, posterior border 

 concave. Front portion of clypeus slightly concave, the 

 anterior border almost straight. Mandibles with four teeth. 

 Frontal carinse slightly curving in at level of eyes, which 

 are well behind the middle of head. Antennal scape 

 swollen beyond middle ; club of funiculus longer than the 

 rest of the funiculus. 



Promesonotnm considerably broader than long, broadest 

 in front. Shoulders of pronotum terminated by large 

 triangular teeth, the sides parallel, with a blunt dentiform 



