PREFACE 



The first fascicle of the first part of this Catalogue of Indian Decapod 

 Crustacea was published in 1901, and contained the Introduction and the 

 Brachyura Primigenia or Dromiacea ; this second fascicle of the first part 

 includes the Cyclometopon Family of Potamonidoe, or Fresh- water Crabs, 

 and is intended, like its precursors of the series, to be complete in itself. 



This instalment, however, differs from its precursors in containing 

 neither a Bibliography nor a full Table of Genera and Species, the chief 

 reason for their omission being that Miss Eathbun's recent Memoir, "Les 

 Crabes d'eau douce," published in Nouvelles Archives du Museum d'Histoire 

 Naturelle, Series 4, 1904-1906, renders them unnecessary. 



