CONTENTS 



Introductory 33 



Biology of Perilampus hyalinus Say 34 



Oviposition 37 



Reproductive capacity 39 



Description of planidium 39 



Habits of planidium 41 



Life as a parasite of Varichseta 42 



As a parasite of Limnerium validum Cresson 43 



As a parasite of summer-issuing Hymenoptera 44 



As a parasite of other hosts 45 



Later larval stages 45 



Pupation 47 



Food habits of the adult 48 



Longevity and oogenesis 49 



Length of life cycle and influence of temperature 49 



Effect of parasitism upon host 51 



Percentage of parasitism 52 



Superparasitism 53 



Perilampus versus Perilampus 53 



Perilampus versus Dibrachys 55 



Perilampus, ' ' species A" 55 



Development of Orasema 57 



Planidium of Orasema viridis Ashmead 59 



Relationship of Eucharidas and Perilampidse 59 



Rhipiphorus and other coleopterous parasites 60 



Host relations of the genus Perilampus 61 



Rearing records of Perilampus hyalinus at the laboratory 61 



Other American rearing records of Perilampus 62 



European rearing records of Perilampus 64 



European species of Perilampus reared at the laboratory 65 



Resum6 of host relations of the genus 66 



Th« economic aspects 67 



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