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



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 than is the first 

 recurrent nervure. 



Hah. Brisbane (Hacker) ; November. 



Apart from the neuration this strongly resembles the male 

 of PisoH vestitum, Sm., but the clypeus is quite different and 

 the abdomen more sessile, the antennge 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 Pemphredoninse. 



2 2- 



1. Three cubital cells ; antennae inserted on the 



front far above the base of the clypeus Neofoxia. 



Two cubital cells ; antennae inserted low down, 



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



2. Two recurrent nervures Passalcecus. 



One recurrent nervure 3. 



3. Abdomen petiolate ; hind tibiae with short spines 



on the outer margin Paracrabro. 



Abdomen not petiolate ; hind tibiae without 

 spines 4. 



4. Ventral plate of the apical segment produced into 



a stout spine-like process ; abdomen ferruginous. Harpactophilus. 

 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 mesouotum ; abdomen pale testa- 

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



Black ; scutellum and postscutellum marked 

 with yellow N. scutellatus, Turn. 



These species were described as Psenulus. Psen lutescens, 

 Turn., is a synonym of inter stitialis, 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. 



