of Exotic Hymenoptera. 311 



the basal segment, and basal half of the second segment, 

 black, both entirely so beneath; the rest of the segments 

 orange. 



Hah. — Australia (Nicol Bay) . 



In the British Museum. 



Explanation of Plate VI. 



Fig. 1. Pteromhrus cBnigmaticus, and details. 



2. Paragia vespiformis, $ . 



3. Acanthostethus hasalis, and details. 



4. AulacopMlus vespoides, and details. 



5. Miscothyris thoracicus, and details. 



6. Anterior wing of Parapison rufipes. 



7. „ ,, Pisonitus ritgosus. 



