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Article VII.—PHYLOGENY OF CYNIPID GENERA AND BIOLOGICAL CHARACTERISTICS

CONTENTS

 INTRODUCTION

Up to the present time the relationships of the genera or even species of the Cynipidæ (Hymenoptera) have been poorly understood. Species have been catalogued without much attempt to discover an arrangement which would indicate evolution, and the genera have been in large part unnatural groups containing large numbers of unassorted, diverse organisms. Moreover, few suggestions have hitherto been made as to the origins of the peculiar biologic phenomena so

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