iVy;7// and Central Australia. 135 



slifjlitly longer than broad, joints 3-5 as broad as long. 

 Club 3-joiiited, the tcrininal joint longer than the other two 

 together. The scape does not quite reach the posterior 

 margin of the head. Pro-niesonotiKii regularly arched, with- 

 out suture; the einargiiiation between the nieso- and epi- 

 notuni deep. Epinoluni unarmed. First node of" pedicel 

 high, slightly broader at base than at top; second slightly 

 lower an<l broader. 



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

 sides ot" meso- and epinota. Body with scattered wiiitisli 

 uprigiit hairs. Anteuiue hairy. 



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

 paler. 



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



Profile view of thorax and pedicel of 

 Monomorium i^Mitara) donisthorpei. 



No. 26. Solenopsis gtminata, F., var. rufa^ Jerd. 



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

 var. rj//a, Jerd., tiie Intlo-Malayan 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. 1.3. 5 %. 



IV. Subfam. DoLicHODERiy^. 



No. 17. Iridoinyrmex rufum'ger, Lowne, subsp. pallidus, For. 

 Darwin, N.T., 17. vii. 13. 5 . 



No. 424. Iridomyrme.v niiidus, Mayr. 

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



V. Subfam. ( AjiPoyoTiyjs. 



No. 16. Opisthopsis kaddo7u\ Em. 

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



