8 



gramma here. It is a very effective enemy of its proper host, 

 for though I bred scores of the parasites from the leaf-hopper 

 eggs sent here from CaHfornia, not one single leaf-hopper 

 emerged, and Mr. Koebele had just the same experience in that 

 State. 



SYSTEMATIC ACCOUNT. 



New species and genera of Hymenoptera here described. 



DRVINIDAE. 



Apterodryinus gen. nov. 



torvus sp. nov. 

 Chalcogonatopus Perk. 



leptias sp. nov. 



paraleptias sp. nov. 



euprepcs sp. nov. 



euprepoides sp. nov. 



argyrias sp. nov. 



rapax sp. nov. 



frcqiiens sp. nov. 



soUtarius sp. nov. 



echo sp. nov. 



herbarum sp. nov. 



xestocephalus sp. nov. 



unicus sp. nov. 



simulator sp. nov. 



koehelei sp. nov. 



perd chilis sp. nov. 

 Encamptonyx gen. nov. 



testaceus sp. nov. 

 Agonatopus gen. nov. 



pallidicornis sp. nov. 



var. dnbiosus var. nov. 



fcrrugincus sp. nov. 



picescens sp. nov. 



innitidiis sp. nov. 



hetero thorax sp. nov. 

 Agonatopoidcs gen. nov. 



synchromns sp. nov. 

 Ncogoiiatopns Perk. 



Pscudogonatopns Perk. 



arisonicus sp. nov. 



antoxenohiiis sp. nov. 

 Ncod ry inns P cr k . 



arizonicus sp. nov. 



dnbiosus sp. nov. 

 Paradryi n ns Perk. 



mexicanus sp. nov. 

 Hcsperodryinns gen. nov, 



ainphiscepac sp. nov. 



ariconicns sp. nov. 



andax sp. nov. 

 Perodryinns gen. nov. 



amocnus sp. nov. 

 Enkoebeleia Perk. 



ar iconic a sp. nov. 

 Deinodryinns gen. nov. 



paradoxus sp. nov. 



qncrcicola sp. nov. 

 Chelogyjins Hal. 



Insns sp. nov. 



fnnestns sp. nov. 



mclanacri-as sp. nov. 

 Anteon Jnr. 



arizoncnsis sp. nov. 

 Aphelopns Dalm. 



ariconicns sp. nov. 



z'idnus sp. nov. 



pucherrimus sp. nov. 



microleucns sp. nov. 



