78 FORAMINIFERA OF THE CRAG. 



for which I am mainly indebted to the work referred to ; but, to make a 

 comparison with the First Part of this Monograph clearer, notes have been added 

 in square brackets (see Table, p. 5). 



The distribution of Foraminifera throughout this series will best be understood 

 by discussing the several beds in detail.' 



BRIDLINGTON BEDS.— It will be noticed that the so-called " Bridlington 

 Crag" is omitted from the following classification, as that deposit is now 

 definitely regarded as Pleistocene.* The Foraminifera indicated in the twelfth 

 column of the " Table showing the Distribution of the Foraminifera in the Crag 

 Deposits," Appendix II of the First Part of this Monograph, are therefore (unless 

 for comparison) not further described. 



NEWER PLIOCENE [UPPER CRAG]. 

 BEDS ABOVE THE RED CRAG.— Our knowledge of the distribution of 

 Foraminifera in the entire series of Upper Crag beds remains, unfortunately, in 

 almost precisely the same condition as that tabulated in the list already referred 

 to, with the following few additions for the Chillesford Beds of Aldeby, near 

 Beccles. 



Nodosaria raphanus (Linn.), vs. VR.^ 



Textilaria globulosa, Ehreub., s. VR. 



Polymorjjhina tuberculata, d'Orb., m. VR. 



Planorhulina mediterranensis, d'Orb., m. VR. 



RED CRAG. — The coarse quartzose sand and ferruginous condition of the Red 

 Crag beds were not favorable to the presence and preservation of Foraminifera ; 

 but a more extended research in the finer and lighter coloured sands would, no 

 doubt, prove profitable, although a prolonged search through some of the grey sand, 



in R. B. Newton's ' Syst. List P. E. Edwards's Coll. Britisli Oligocene and Eocene Mollusca' 

 (Appendix), 1891, pp. 327—340. 



For details of Belgian Pliocene stratigraphy see " Esquisse geologique et paleontologique des 

 depots pliocenes des environs d'Anvers," by E. Vanden Broeck, ' Ann. Soc. Malac. Belg.,' vol. ix, 

 1874, pp. 83 — 374 ; and of Italian Pliocene, &c., " Classification des Terrains tertiaires conforme 

 a leurs facies," by F. Sacco, ' Bull. Soc. Beige de Geol.,' Ac, vol. i, 1887, pp. 276—294. 



1 The remarks on the distribution of Foraminifera are based upon the examination of material 

 collected by me during the past eight years, with the exception of some from Tattingstone and 

 Gedgrave (Zone g) kindly given by Prof. Prestwich. The whole of this material has been worked 

 over by Mr. E. Holland and myself; and Mr. F. Chapman gave us some assistance with the 

 Tattingstone Crag. For complete lists see Appendix. 



'^ For referfnces see C. Reid, op. cit., p. 208. 



5 vs. very small ; s. small ; m. middling ; VR. very rare. 



