CONTENTS OF VOLUME L 
Page 
PREFACE. © 6 6 ee ee ili 
6 
INTRODUCTION. © 1. ee ee 1X 
Commentary on the Introduction and Appendix . . . © - - e/ + + ee ee lxii 
Enumeration of the PoryreraLa, with Descriptions of New Species . . . . . . . - 1-576 
