NEW SPECIES OF AUSTRALIAN ANTS 



11 



21. Epinotal declivity only slightly longer than dorsum, but the dorsum 

 does not overhang the declivity — 

 (a) node only half as high as declivity 



22 



P. depressiceps Emery. 



(b) node nearly as high as declivity 



var. similis new var. 

 Epinotal declivity only slightly longer than the dorsum, but the 

 dorsum overhangs the declivity to a marked degree — 



(a) clypeus carinated and frontal area indistinct 



P. nitidissimus Andre. 



(b) clypeus subcarinated and frontal area distinct 



P. nitidissimus var. formicoides Forel. 

 25. Epinotal declivity slightly longer than the dorsum. Anterior border 

 of the clypeus bluntly pointed. First segment of the funiculus 

 slightly longer than the second 



P. niger Clark. 



23 



2-4 



CHARACTERISTICS COMPARED 



Species 



Length 

 mm. 



Clypeus 



Scape extends over 

 the occiput by — 



Firs! segment of fun- 

 iculus longer than— 



Epinotal declivity 



Colour 



advena 



3 mm. 



rounded ; carinate 



quarter of length 



two following 



twice Dorsum 





hellenae 



2.5 mm. 



rounded ; carinate 



third of length 



two following 



three times Dorsum 



Uniformly 



antenna! a 



3-3-4 mm 



pointed ; carinate 



half of length 



two following 



just longer than D. 





zcalandica 



3 mm. 



rounded ; not carin. 



third of length 



two following 



twice Dorsum 



light 



tonvexa 



3.4-3.6 



rounded ; not 



half of length 



two following 



just longer than D. 





clarki 



2.5-3 mm. 



pointed ; not carin 



third of length 



three following 



twice Dorsum 



brown 



brune a 



g.4 ii mi. 



■ ■ 1 ; not carin. 



third of length 



two following 



twice Dorsum 





nijoberxt 



3.5-4 mm. 



rounded ; carinate 



half of length 





longer than Dorsum 





ni^riventris 



3-4 turn. 



rounded ; carinate 



third of length 



three following 



just longer than D. 



Gaster 



quadrat a 



3.5-4 mm. 



rounded ; carinate 



third of length 



two following 



twice Dorsum 



darker 



abruptus 



3.5 mm. 



pointed ; not carin. 



half of length 



as long as two fol- 

 lowing 



two and half times D. 



brown 



rob ust us 



:iA-i irmi. 



rounded ; not carin. 



half of length 



two following 



twice Dorsum 



and 



pallidus 



2.2-2.8 



pointed ; not carin. 



quarter of length 



two following 



twice Dorsum 



thorax 



hemiflavus 



2.7-3.2 



rounded ; not carin. 



third of length 



three following 



twice Dorsum 





uihoni 



3 mm. 



rounded ; not carin. 



third of length 



two following 



twice Dorsum 





Jlaiicornis 



: } j 4 iiiul 



pointed ; sub-carin. 



half of length 



three following 



just longer than D. 





minor 



3.5 mm. 



pointed ; sub-carin. 



half of length 



two following 



just longer than D. 





jlavidiscus 



3.4-3.0 



pointed ; sub-carin. 



third of length 



two following 



twice Dorsum 



Uniformly 



uheeleri 



3.4-3.8 



pointed ; carinate 



half of length 



one following 



twice Dorsum 



very 



reticulata 



3.4-4 mm. 



rounded ; carinate 



half of length 



one following 



twice Dorsum 



dark 



depressiceps 



3-3.5 mm. 



rounded ; carinate 



half of length 



one following 



just longer than D. 

 twice height of node 



brown 



similis 



3-3.5 mm. 



rounded ; carinate 



half of length 



one following 



just longer than D. 

 as high as node 





mtidissimus 



3.5-4 mm. 



rounded ; carinate 

 F. area indistinct 



half of length 



one following 



just longer than D. 

 Dorsum overhanging 





formicoides 



3.3-4.2 



sub-carinate 

 F. area distinct 



half of length 





just longer than D. 

 Dorsum overhanging 





niger | 3-4-3-8 



pointed ; sub-carin. 



half of length 



one following 



just longer than D. 



Black 



