510 H. W. Burrows — Crag Foraminifera. 



It seems probable that the greater number of the species recorded 

 from Sutton in the First Part of the Monograph of the Foraminifera 

 of the Crag (1866) were from zone /; but, if that were not so, it is 

 now impossible to separate those found in zone e. 



6. Gedgrave. — Zones /, g, and h are still well shown in the pits 

 at High and Low Gedgrave, one-and-a-half miles west of Orford. 



Pit close to High House, Gedgrave. Under the surface soil, zone 

 Ji, 2 to 3 feet; zone g, for about 17 feet to bottom of the pit; base 

 not seen. 



Pit at Loio Farm, Gedgrave, close to the marshes, showing in part 

 the downward succession of the High House Pit; zone/, 6^ to 7 

 feet (base not seen). A small pit at Ferry Barn, half-a-mile to the 

 south-west, also shows a good exposure of this bed, with Foraminifera 

 and small Mollusca. 



Zone /is rich in Foraminifera, some being large and striking, e.g. 

 Textilaria agglutinans, T. gibhosa, Folymorphina variata, P. frondi- 

 formis, P. compressa, P. complanata, together with large, but rarer, 

 Biloculina ringens, etc. SpiriUina vivipara, usually a rare species, is 

 somewhat common here. Speaking generally, the Foraminifera are 

 closely allied to those from Sutton, zone /. 



In zone g a striking feature is the comparative abundance of 

 LagefKs, particularly the marginate forms. Other rather common 

 species are — Nonionina scaplia, SpiriUina vivipara, Miliolina ohlnnga, 

 Planorbulina Mediterranensis, 2'extilaria sagittula, Bolivina jEnari- 

 evsis, and Rotalia Beccarii. 



Zone h has probably been reconstructed from a part of zone g. 



7. Aldborough ; zone g. — The pits near the lied House, Leiston 

 Eoad, close to Aldborough, show about eight feet of fine, buff- 

 coloured, rubbly limestone full of Brj^ozoa, in part decalcified. 

 Mollusca are not abundant, those species of which the tests are 

 formed of aragonite having been removed by percolation of 

 carbonated waters. Chlamys opercularis is abundant, however, as 

 the shell consists of calcite. Owing to this decalcification, Fora- 

 minifera are somewhat scarce in this locality, only a few much 

 decomposed Porcellaneous forms, such as Miliolina oblonga, M. 

 seminulum, and Biloculina ringens, occurring. The Hyaline forms, 

 although better preserved, are usually in a somewhat decomposed 

 condition, with the chambering obscured. Thus probably the original 

 foraminiferal fauna is by no means fully represented. 



8. Sudbourne. — Pits to the north-east of Sudbourne Church. The 

 upper beds in this neighbourhood are nearly all referable to zone g ; 

 they are very ferruginous, and the Foraminifera badly preserved. 

 Eleven species, mostly common elsewhere, have been found ; they 

 are plentiful, but obscured with iron-oxide. 



HI. Lenham Beds. — The sands and fossiliferous ironstone found 

 at Lenham, in Kent, by Professor T. Rupert Jones and Mr. W. 

 Harris, were referred in 1858 by Professor Prestwich to the Crag 

 and Diestian Series ; and this has been confirmed by further com- 

 parison of the fossils with those of Diestian age. These sands do 

 not appear to have been examined for Foraminifera, and probably 



