XV111 INTRODUCTION. 



Without Oligocene. With Oligocene. 



Middle fNanterre, Gentilly, and Batignolles, Middle Eocene. 



Eocene. ' near Paris. 



Argenton (Indre). 

 Issel (Aude). 

 ■ Bucshweiler (Alsace). 

 Bracklesham (Sussex). 

 ? Ober-Grosken, Egerkingen, &c. (Swit- 

 zerland), in part. 



Lower . f London Clay. Lower Eocene. 



Eocene. * \ Cuyse-la-Motte (Marne). 



{Meudon, near Paris. 

 Soissons (Aisne). 

 Woolwich and Reading. 



p [La Fere (Aisne). 

 ' \ Reims x (Marne). 



The Maraglia beds of North-west Persia may be placed in the 

 same group as the Pikermi beds. The Maltese beds are probably 

 in part Middle, and in part Lower Miocene (Oligocene). The 

 Eridger group of North America appears to be Middle, and the 

 Wasatch Lower Eocene. The Lower Siwaliks of Sind may be 

 Upper Miocene. 



In conclusion, I have again to express my obligation to those 

 gentlemen who have kindly favoured me with the loan of wood- 

 blocks, and to add to the list mentioned in the preceding Parts the 

 name of Dr. J. E. Taylor, of the Ipswich Museum. I have also to 

 offer my thanks to Mr. H. B. Medlicott, Director of the Geological 

 Survey of India, for sending home several specimens of Indian 

 Mastodon-teeth, from the Calcutta Museum, which have enabled me 

 to amend some of my previous identifications. Plaster models of 

 these important specimens have been made by the Museum Forma- 

 tore and added to the Collection. Mr. W. Davies has again been 

 good enough to verify the description and number of each specimen ; 

 and it is in many instances solely due to his intimate acquaintance 

 with individual specimens that it has been possible to record the 

 history of their acquisition. 



The Dixon Collection, which is mentioned for the first time in this 

 Part, was purchased in 1853 from Mr. F. Dixon, of Worthing, and 

 mainly comprises specimens from the south of England. 



RICHARD LYDEKKER. 



The Lodge, Harpenden, 



Hertfordshire. 



October 1, 188G. 



1 Cernayisien stnge. 



