.last ra/ ill II mid Tusmn ninn ('oli'optcrit. 51 



ill t'lnnt. l)ut from ntlieis they are seen to be nnly shallower there, 

 and they really meet in frcnit, so that combined they apjiear to form 

 a short broad A, with a raised A immediately behind. 



I'lcrtuxiuli'!^ inibe!<ctn!<, n.sp. 



d- Heddish-eastaneous. appendafjes somewhat paler. Denselv 

 clothed with very short pale pubescence. 



Head rather wide; each side with a wide depression, meetinp: in 

 front, and deepened posteriorly so as to be almost foveate ; base dis- 

 tinctly notched, the space in front of notch elevated in the form of a 

 wide A. Antennae thin, slightly passing base of prothorax, second 

 to eighth joints small, ninth and tenth larger but scarcely forming 

 part of a club, eleventh elongate-ovate, apex rather acutely produced. 

 Palpi very small. Prothorax feebly transverse, depressed ; sides 

 rounded in front, apex wider than base, near base strongly trans- 

 versely impressed, the impression foveate at each side and subfoveate 

 in middle ; median line fairly deep, but not extending to apex or 

 subbasal impre.ssion ; with small dense punctures. Elytra slightly 

 longer than wide, slightly wider than widest part of pro- 

 thorax, sides gently rounded, dorsal stria on each distinct at base, 

 but scarcely traceable to basal fourth ; with small dense punctures. 

 Abdomen about the length and width of elytra, parallel-sided to near 

 apex ; under surface with a large shallow impression on apical seg- 

 ment. Lef/ft rather long ; front trochanters subtriangularly dentate. 

 Length \}f mm. 



Hah. — New South Wales: Sydney, from nests of Erfatonnna 

 metallicuni and Po/ijrhacliis auimoii (A. M. Lea). 



Close to hrerirepx, but narrower and with denser although still 

 short pul)escence. From the sides and from certain other directions 

 the nietasternurn of that species appears to he sulcate throughout 

 its length, l)ut in this species the surface is scarcely visibly impressed 

 ahmg the middle. The prothorax is also less inflated than in brevireps. 



From some directions the head appears to be conspicuously 

 bifoveate. Judging by the abdomen and trochanters the three speci- 

 mens before me are all males. 



I'lrctu.^ddix cavifrons, n.sp. 



<?• liright reddish-cast aneous. appendages paler. Kather sparsely 

 clothed with very short ]>ubescence, interspersed with a few longer 

 but not very conspicuous hairs. 



Head wide ; with a wide impression in front, curved round at sides 

 and foveate close to each eye ; base distinctly notched, the space in 

 front of notch in the form of a wide elevated A. Antennae moderately 

 thin, just passing base of prothorax, first joint very little larger than 



