106 Mr. R. E. Turner on Fossorial Hymenoptera. 



tlie base of the clypens ; cheeks very broad, much broader 

 than the eyes ; first abdominal segment a little longer than 

 the greatest breadth ; pygidial area rugulose, elongate-ovate, 

 rather narrowly truncate at the apex ; second ventral segment 

 almost smootli, the other ventral segments sparsely and 

 shallowly punctured. 



Ilah. S. Queensland, Darra near Brisbane {Hacker) ; De- 

 cember. 



Not very near to any other Australian species. 



Subfamily Ntssoi^in^. 



Ni/sson (Acanthostethus) hrisbanensis, Turn. 



Nysson (Acanthostethus) brisbanensis, Turn. Ann. & Mag. Nat. Hist. (8) 

 xv. p. 81 (1915). $. 



cJ . The male has the ventral segments bare, without a 

 fringe of hairs ; ventral segments 3-6 with a small but 

 d.istinct spine on each side at the apical angles; seventh 

 dorsal segment widely and rather shallowly emarginate at 

 the apex, the angles produced into short blunt spines. 



Hub. Brisbane (^Hacker) ; February. 



Differs from nudiventris, Turn., to which species the female 

 is most nearly allied, in the shape of the seventh dorsal seg- 

 ment, which only has two spines (one at each apical angle), 

 also in the presence of a short spine at the apical angles of 

 the sixth ventral segment. The only specimen sent is very 

 small, measuring only 4 mm. in length. 



Subfamily Cbabmonin^. 



Kncopognathus brownei, sp. n. 



5 . Nigra, ubique dense rugose punctata ; scapo, callia hunaerali- 

 bus, postscutello, femoribus apice extreme, tibiis tarsisque pallida 

 fiavis ; tibiis intermediis posticisque infra fuscis ; alls hyalinis, 

 iridescentibus, venis fuscis, stigmate testaceo. 

 Long. 5 mm. 



? . Mandibles excised on the outer margin, acute at the 

 apex. Clypeus subcarinate longitudinally, produced into 

 two porrect teeth at the apex, with a smaller tooth on each 

 side near the apical angles. Eyes not hairy, the facets in 

 front larger than elsewhere, separated from each other at the 

 base of the clypeus by a distance equal to about half the 

 length of the scape ; frontal groove smooth and shining. 

 Posterior ocelli a little nearer to the eyes than to each other, 

 the ocellar region and the vertex coarsely punctured-rugose. 



