PRE1 



Arlicr, T. G. Koimey, and II. Woods. I .un specially 

 indebted to Mr. Woods for revising all the descriptions and 

 lists of fossils, and for amending the nomenclature, both of 

 iO'iieni and species, in accordance with current views. 



Finally, I may point out that many additional illustrations 

 have been inserted, not only of fossils but of maps and 

 sections, so that there are now over two hundred figures and 

 groups of fossils. Moreover, two of the older maps, those 

 of North Wales and Devonshire, have been replaced by 

 more correct representations, in accordance with recent 



publications. 



A. J. JUKES-BROW NK 



\VKXTI. KICH, TORQUAY, 

 November 1911. 



