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THE following Index includes the genera and species mono- 

 graphed in volumes II, III, IV, V, VI, VII, VIII and IX 

 of this series, with the Heliciform or Zonitoid species of 

 Vol. I. It comprises therefore, part or all of the species of the 

 families Rhytididce, Streptaxidce, Selenitidce, Zonitidce, Endodontidce 

 and HeUcidw. In short, the reader may reasonably expect to find 

 herein the names of all Heliciform snails originally described 

 under the loose generic term HELIX, as well as all which have a 

 shell of the contour generally associated with, or suggestive of that 

 name. The references give the volume and page upon which each 

 species is described ; and in the case of JEndodonlidce and Helieidce 

 further reference is given to Volume IX, in which the forms of 

 these families are classified and rearranged. 



At the end of this Index will be found a table showing the dates 

 of publication of the several parts of the SECOND SERIES of this 

 MANUAL. This is followed by a list of corrections which should be 



made in volumes II to IX. 



This Index may be bound either with Volume IX or as a separate 

 thin volume. II. A. P. 



