126 ]'HOCEKl)lN(iS OK TJ I F. KOV.\I> St^ClETV OF QKEENSLAND. 



SUMMARY. 



In the })resent paper three new primary hymenopterous 

 parasites of sheep maggot-flies are recorded,^ — Spalungia 

 mtiscidarum Richardson, Paraspilomicrus froggatti n. gen., 

 n. sp., and Austrahncyrtus giravlti n. gen., n. sp. — and a few- 

 observations on the hfe- history of these and certain others 

 are recorded. 



As a result of a short investigation regarding the habits of 

 these wasps and their hosts, it appears hkely (from laboratory 

 experiments only, however) that the value of some of these, 

 especially Nasonia brevicornis, has been greatly over-estimated. 



In conclusion, reasons are given for the advisability of the 

 introduction of the well-known English sheep-fly parasite, 

 Ahjsia manducator . 



