1908.] AUSTRALIAN FOSSORIAL WASPS. 519 



head, very short, the posterior margin straight. Median segment 

 as long as the mesonotnm, narrowed strongly and al^iuptly 

 ti'uncate posteriorly, with a median carina lying in a narrow 

 depression not qnite reaching the base of the truncation, delicately 

 obliquely striated, punctured between the stria? ; the surface of the 

 truncation with a deep depression at the base, finely punctured at 

 the sides, finely transversely striated near the apex. Abdomen 

 shining, very minutely punctured, the first segment slender at the 

 base, as long as the second, and at the apex about two-thirds of the 

 breadth of the second ; the second segment transversely' depi'essed 

 at the base and longer than the third. 



Entirely black, with a little sparse silvery pubescence on the 

 orbits of the eyes and the sides of the median segment and 

 abdomen ; a little fulvous pubescence on the sides of the two apical 

 segments ; the silvery pubescence very short and fine, the fulvous 

 coarser. "Wings hyaline, iridescent, faintly clouded at the extreme 

 apex ; nervures black. 



The second cubital cell is very short on the radial nervure, but 

 half as long as the first on the cubital nervure, receiving the 

 second recurrent nervure before the middle. The first cubital cell 

 receives the first recurrent nem'ure at about one-sixth from the 

 apex. 



Length 7 mm., exp. 11 mm. 



Hah. Kuranda near Cairns, Queensland (^Turner) ; February. 



PisoN (Parapison) aberrans, sp. n. 



c^" . Antennse no longer than the head, moderately thickened to 

 the apex, about the same distance from each other at the base 

 as from the eyes ; the second joint of the flagellum scarcely longer 

 than the first, the scape longer than the first three joints of the 

 flagellum combined. Clypeus nearly three times as broad at the 

 apex as long, the apical mai-gin almost straight, clothed with 

 shining silvery pubescence. Head and thorax opaque ; an obscure, 

 impressed, longitudinal line on the front below the anterior 

 ocellus ; the front x-ound the base of the antennee and the inner 

 orbits of the eyes below the emargination clothed with silvery 

 pubescence. Eyes narrowly and rather shallowly emarginate, the 

 emargination hardly equalling in depth the length of the first 

 joint of the flagellum ; the distance between the eyes at the base 

 of the clj'peus exceeding by more than one-third the distance 

 between them on the vertex ; the posterior ocelli nearly twice 

 as far from each other as from the eyes. Pronotum strongly 

 depressed anteriorly, the posterioi- margin very broadlj' arched. 

 Scutellum smooth and shining, broadly truncate at the apex. 

 Median segment longer than broad, finely obliquely striated, 

 longitudinally depressed in the middle, with a carina in the 

 depression, truncate posteiiorly ; the surface of the truncation 

 transversely striated, with a median sulcus. Abdomen shining, 

 microscopically punctured, the segments feebly but bi-oadly 

 depressed on the aj)ical margin ; the second segment transversely 



