CONTENTS. 



I'Hge. 



Introduction 53 



Descriptive 54 



Origin and distril)ution 57 



Literature and history 57 



Recent injuries and biologic notes 58 



Early records 62 



Life-cycle periods and generations 62 



Natural enemies 63 



Methods of control 65 



Resume of experiments, and c-onclunions 68 



Summary 69 



Bibliographical list 70 



ILLUSTRATIONS. 



Pafje. 

 Fig. S. The.semitropical army worm {Pi-odfyiiaeridania) : Moth, egg, egg-mass, 



larvie 54 



9. The semitropical army worm (Prodenm eruhinia): Work of larvfe on 



' ' careless weed ' ' in potato field ..'. 59 



10. Tlie semitropical army worm { Prodenia eridania) : Field <>f late Irish 



potatoes, showing vines entirely stripped by larvae 60 



11. The semitroi)ical army worm (Prodenia eridania): Larvae eating bark of 



"carjless weed;" also ni'muh of spined soldier-bug (Pof/iw.s macu- 



lii>entriii) , predaceous on larv.e of Prodenia eridania 61 



on— V 

 II 



