nt*w Ants from Aitstnifia. 17 



tlic (Icrlivity, wliicli is concave and bordered. I'ronotmn 

 about once and a bait" as long as Ijroad, the shoulders rounded, 

 the sides gradually narrowing in a gentle curve to just before 

 the suture, where they narrow abruptly and form a deep 

 constriction. First node from above a little broader than 

 second, broader than long, almost straight in front and 

 behind, the sides rounded ; the second node rounded, slightly 

 broader than long. In profile the first node is higher than 

 the second, slightly higher in front than behind, not greatly 

 uarrower at apex ; the second more or less globular. 



Shining ; mandibles smooth, grooves continuing the 

 intervals between the teeth ; head with scattered shallow 

 circular punctures. Back of thorax and nodes with a few 

 more su[)erfieial punctures, the rest ^^mooth. 

 5 (minor). Length I'J' ram. 



Entirely pale yellow, except the teeth of mandibles. Head 

 longer than broad, the sides almost parallel, converging very 

 slightly towards the occiput, which is concave. Eyes smaller 

 and placed nearer the base of mandibles. Thorax in profile 

 flatter, mesoepinotal suture dee|)er. First node propor- 

 tionatelv higher and narrower. Otherwise like g major. 



Bvford, W.A. {Clark, no. 171). 



Types W. C. C. coll. 



The first species of Solenopsis found in Australia (except 

 the cosmopolitan geminata, var. riifa^ Jerd.) was described by 

 Forel in 18*J7 under the name of bdisarius. The ^ of this 

 species, which is found in S.W. Australia, is entirely without 

 eves. 



Aphcenogaster poultoni, sp. n. * (Figs. II & 12.) 



5 . Length 1*3 mm. 



Dark castaneous, legs paler. 



Head more or less rectangular, very slightly broader than 

 long, widest at eyes ; it does not narrow at occiput, where 

 the shoulders are very square ; in front at base of mandibles 

 it is only slightly narrower than at occiput. There is no 

 semblance of a neck, and the reflected border is minute. 

 Eyes placed just behind middle of sides. Thesca[)es extend 

 less than one-quarter of their length beyond the occipital 

 border. Joints of funiculus broader and shorter, and club 

 more thickened, than in luugiceps. 



Elevation of thorax i)ronounced, extending to middle of 

 the space between the anterior border and the incision. 

 Sjiines mere teeth, and base of cpinotnm convex. Pedicel 



Ann. cfc Mng. X. Hist. Ser. 1). Vol. .\. 2 



