TABLE OF CONTENTS 



INTRODUCTION pack 



Technic 7 



Previous Work on Gregarines 9 



List of Terms Used in Describing Gregarines lo 



PART I BIOLOGY 



The Hosts Infected 12 



Localities Represented I4 



Seat of Infection I4 



Seasonal Variation within the Host i5 



Relation of Parasite to Host Tissue 16 



Movement in Gregarines 20 



Summary 20 



PART II MORPHOLOGY OF GREGARINES 



Morphology of the Sporonts 27 



The Stenophoridae 27 



The Gregarinidae 30 



Life History of a Typical Cephaline Gregarine 32 



The Question of Sporont Maturity ZZ 



The Cysts 34 



Cyst Formation in the Gregarinidae 



Leidyana erratica 34 



Cyst Development and Dehiscence 36 



PART III SYNOPSIS OF THE EUGREGARINE RECORDS OF THE 

 MYRIAPODA, COLEOPTERA, AND ORTHOPTERA OF 

 THE WORLD 



Introduction 40 



Brief Synopsis of the. Families and Genera of the Tribe Cephalina 



(Delage) of the Suborder Eugregarinae (Leger) 43 



Genera of Uncertain Position 48 



Polycystid Gregarines in the Diplopoda 48 



Polycystid Gregarines in the Chilopoda 80 



Polycystid Gregarines in the Orthoptera 94 



Polycystid Gregarines in the Coleoptera 128 



Appendix 



An Unnamed Didymophes from a Japanese Beetle 198 



