PREFACE. 



The present Memoir, embracing an account of all the Verte- 

 brate organisms at present known from the Pliocene Deposits of 

 Britain, forms a companion volume to the Memoir on " The 

 " Vertebrata of the Forest Bed series of Norfolk and Suffolk," 

 which was published in 1882. While recapitulating and bringing 

 up to date the information we possess as to the species from the 

 Forest Bed it treats more especially of the forms found in the 

 Crag. 



The total number of Vertebrata at present known from the 

 Pliocene Deposits of the country amounts to 212. These have 

 been catalogued and discussed by Mr. Newton in the present 

 Memoir, which will, I trust, be of considerable service to those 

 engaged in the study of the younger Tertiaiy formations. In 

 connexion with this ^'olume the reader should consult the 

 Geological Survey Memoir, by Mr. Clement Reid, on " The 

 " Pliocene Deposits of Britain," published last year. 



Aech. Geikie, 



Director- General. 

 31st March 1891. 



o 63855, 500.-7/91. Wt. 5132. E. & S, ft 2 



