CONTENTS. 



Page. 



Prefatory remarks 7 



Citation of authorities 9 



Index 11 



Systematic list of genera and families 77 



Genera incertse sedis 81 



Genera containing a heterogeneous assembly 81 



Genera erroneously referred to the Brachiopods 81 



Summary , 82 



List of the Linnoean species of Brachiopods, with their modern equivalents 82 



Table of the distribution of the genera of Brachiopods in time 83 



Table of the distribution of the families ol Brachiopods in time 87 



5 



