128 Mr. R. E. Tinner on Fossorial Ilymetioptera. 



the first, second recurrent nervure received just beyond one- 

 fourth from the base of the second cubital cell, a little further 

 from the first transverse cubital nervure tiian is the first 

 recurrent nervure. 



Hah. Brisbane {Hacker) ; November. 



Apart from the neuration this strongly resembles the male 

 of Pison vestitum, Sni., but the clypeus is quite diff'crcnt and 

 the abdomen more sessile, the antennaB shorter with the 

 joints differently proportioned, the punctures less distinct, and 

 the distance between the eyes on the vertex greater. 



Key to the Genera of Australian Pemphredoninae. 



$$■ 



1. Three cubital cells ; antennae inserted on the 



front far above the base of the clrpeus Neofuxia. 



Two cubital cells ; antenuoe inserted low down, 



on the sides of or at the base of the clypeus . . 2, 



2. Two recurrent nervures Passaloecus. 



One recurrent nervure 3. 



3. Abdomen petiolate ; hind tibiae with short spines 



on the outer margin Paracrabi'o. 



Abdomen not petiolate ; hind tibiae without 

 spines 4. 



4. Ventralplateof the apical segment produced into 



a stout spine-like process ; abdomen ferruginous. Harpacto^ihilus. 

 Ventral plate of the apical segment not pro- 

 duced 5. 



5. Pronotum with a distinct transverse dorsal 



surface Austrostigmus. 



Pronotum oblique, without a distinct dorsal 

 surface Spilomena. 



Key to the Australian Species of Neofoxia. 



1. Thorax yellow, with a quadrate black spot 

 on the mesonotum ; abdomen pale testa- 

 ceous brown ; head black N. inter stUialis, Cam. 



Black ; scutellum and postscutellum marked 

 with yellow N. sciitellatus, Turn. 



These species were described as Psemilus. Psen lutescens, 

 Turn., is a synonym of inter stkialis. Cam., which was 

 described from a New Guinea specimen. Both the Austra- 

 lian species are from North Queensland. 



Genus Passalcecus. 



I do not think that Polemistus, Sauss., can be separated 

 from this genus. The only Australian species is P. exul, 

 Turn., which occurs on the whole eastern coast of Queensland. 



