North and Central Australia. 135 



sli<?litly longer than broad, joints 3-5 as broad as long. 

 Club 3-joiiite ], the terminal joint longer than the other two 

 tojiether. The scape does not quite reach the posterior 

 margin of t'lie head. Pro-mesonotum regularly arched, with- 

 out suture ; the etnargination between the meso- and epi- 

 notum deep. Epinotum unarmed. First node of pedicel 

 hicrh, sli-ihtly broader at base than at top; second slightly 

 lower and broader. 



Smooth and sliining; a few strise on the lower part of 

 sides o£ meso- and epinota. Body with scattered whitish 

 U[)right hairs. Antenii^e hairy. 



Black-brown; mandibles, tarsi, and articulations of legs 

 paler. 



Darwin, N.T., 10. ii. 14. 



Profile view of thorax and pedicel of 

 Monomorium {Mitara) donisthorpei. 



No. 26. Solenopds geminata, F., var. ru/a, Jerd. 



The typical geminata, F., is the American form. The 

 var. rufa, Jerd.', tiie Iiido-M;dayan form, is cosmopolitan, 

 and distinguished by its lighter colour and the presence of a 

 small tooth on each side between the prosternum and meso- 

 sternum. It has been recorded from Celebes. 



Darwin, N.T., 17. iv. 13. ^ %. 



IV. Subfam. DOLICHOBJEMINM. 



No. 17. Iridomyrmex rufuniger, Lowne, subsp. pallidics, For, 

 Darwin, N.T., 17. vii. 13. ^ . 



No. 424. Iridomyrmex nitidus, Mayr. 

 Melville Island, N.T., 14. iv. 14. ^ . 



V. Subfam, Camponotinje. 

 No. 16. Opisthopsis haddoni, Em. 

 Point Charles, N.T., 14. viii. 13. 5 . 



