new Ants from Australia. 



431) 



Whole of head ahove and below, ineluding the fossro, 

 fiuely striated right up to the occiput. The occipital 

 groove extends from the edge of the depression to the 

 occi|)ut, deep. 



The striie on top of pronotum in front are spiral, on tlie 

 liinder ])art they are transverse. On the rest of thorax 

 they are transverse, ninch coarser on the base of epinotuin. 

 The declivity has a few coarse transverse striae. 



Fisr. 3. 



Head and end of mandible of Odontomachus rugiceps, Sm,, type. 



Back of node quite smooth, the front has transverse 

 striae. 



Gaster microscopically reticulate. 



ForeFs race acutidens (I. c. and Ann. & Mag. Nat Hist, 

 ser. 9, vol. vii. p. 90, 1921) varies in length from 75 to 

 lO-O mm. or more, the largest ^ almost deserving the name 

 of '' soldier." 



