Mr. R. E. TLiruei' on Fossurial lljinenoptera. 109 



species except //-enc/ii and macrocephalus^ and the hind tibiae 

 are much less swollen than is usual in the genus. 



Subfamily Trypoxtloxin^. 

 Pison deperdituin, sp. n. 



2 . Xigra ; mandibulis, palpis, antonnis, abdoniine pedibusque 

 nifo-ferrugiiiois ; tegulis testaceis ; alis hj'alinis, venis fuscis ; 

 beguieiito mediauo crasse rugoso, sulco mediali lato, transverse 

 striate. 



Long. 7 mm. 



$ . (Jlypeus broadly rounded at the apex, clotbed with 

 wbitish pubescence, whicb extends on to the front. Second 

 joint of the flagellum about equal to the third, nearly twice 

 as long as the first. Eyes separated at the base of the cly|)eus 

 by a distance equal to nearly twice tiie length of the scnpe, 

 and by about the same distance on the vertex ; posterior 

 ocelli a little further from each other than from the eyes, 

 separated from t^acb other by a distance equal to the diameter 

 ot one of them, with a shallowly impressed transverse line 

 behind them. Front with a low carina from tlie base of the 

 antennae reaching halfway to the anterior ocellus. Pronotum 

 transverse, with a narrow depression along the hind margin ; 

 thorax smooth, opaque. Median segment very coarsely 

 rugose-reticulate, with short oblique stria3 at the base, and a 

 very wide transversely striated longitudinal sulcus, the poste- 

 rior slope irreguiaily transversely striated. Abdomen micro- 

 scopically punctured, the segments broadly but very shallowly 

 depressed on the apical margin. First recurrent nervure 

 received just before the apex of the first cubital cell, second 

 received close to the middle of the second cubital cell ; third 

 cubital cell on the radius very short, shorter than the petiole 

 of the second cubital cell. 



Hab. Port Darwin, Northern Territory [G. F. Hill). 



This is very closely allied to P. riijicornis, Sm., from 

 which, however, it is easily distinguished by the very ditferent 

 and much coarser sculpture of the median segment. The 

 neuratiou in both species is that of the section PtsoidluSj 

 Shuck. 



Pison multistrigatum, sp. n. 



2 . Nigra ; palpis testaceis ; calcaribus unguiculisque ferrugineis ; 



alls hyalinis, apioe leviter infumatis, venis fuscis ; segmeuto 



mediano fortiter longitudinaliter striate. 

 LonK. nim. 



