CONTENTS. 



PREFACE v 



INTRODUCTION 



Achatinellida defined and compared with other families. ix 



Structure and interpretation of the teeth x 



Classification xiii 



Color-patterns xix 



Shape and structure of the shell xxiv 



Conceptions of species and minor races xxv 



Habits, stations, conditions of collecting, etcetera .... xxxiv 



Supplementary observations on Hawaiian zoogeography. . xli 



Kemarks on the synonymy of Achatinellidce 1 



Historical notes on the literature of AchatinellidoB .... lii 



SYSTEMATIC PART 



Genus NEWCOMBIA PfeifTer 1 



Genus PARTULINA Pfeiffer 14 



Section Perdicella Pease 16 



Section Partulina s. str 23 



Section JEburnella Pease 67 



Section Baldwinia Ancey 90 



Observations on Hawaiian Achatinellidse, by H. W. Henshaw. 91 



Genus ACHATINELLA Swainson 117 



Section Bulimella Pfeiffer 118 



Section Achatinellastrum Pfeiffer 180 



Section Achatinella s. str 274 



APPENDIX I. Additional notes, undefined species etcetera . . 355 



APPENDIX II. Genealogy and migrations of the Achatinellidse 



in the Hawaiian Islands, by Alpheus Hyatt 370 



EXPLANATION OF PLATES 400 



INDEX 423 



DATES OF ISSUE OF THE PARTS OF VOLUME XXII 428 



(iii) 



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