280 Reports and Proceedings — 



in the upper horizons (A, B, and C) of the Permian beds of Eussia, 

 and in the Karoo Beds. These upper beds of Eussia have been 

 determined by the author as the fresh-water equivalents of the 

 Zechstein ; consequently the Beaufoi-t Beds of the Karoo series, if 

 considered as the homotaxial equivalent of the European strata 

 referred to above, should be regarded as Upper Permian. The 

 Upper Permian group of fresh-water lamellibranchiata of Eussia, 

 which bears traces of genetic relationship with the Carboniferous 

 Anthracosidse, and which was already well represented in Permo- 

 Carboniferous and Lower Permian times, is, according to the author, 

 much older than the African fauna of the Beaufort Beds. These 

 may be concluded to have migrated from Eussia, the Gondwana 

 Beds of India having probably been the connecting-link between 

 all these deposits. 



The author gives a description of the fossils of the Karoo series 

 which he has examined, including a diagnosis of the new genus, in 

 which he places the fossils already alluded to as having been 

 previously referred to the genus Naiadites. 



3. " Ice-plough Furrows of a Glacial Period." By W. S. Gresley, 

 Esq., F.G.S. 



The furrows described in the paper occur in the Coal-measures 

 of north-west Leicestershire. Tlie author considers that they were 

 formed about the time of the Glacial period by floating ice. 



IL— April 24:th, 1895.— Dr. Henry Woodward, E.E.S., President, 

 in the Chair. The following communications were read : — 



1. "On the Shingle Beds of Eastern East Anglia." By Sir 

 Henry H. Howorth, K.C.LE., M.P., F.E.S., F.G.S. 



The author has carefully examined the country around Southwold, 

 where the beds known as Westleton Beds (which might well have 

 been associated with the name of Southwold) are developed. He 

 alludes briefly to the recent shingle, whose pebbles are derived from 

 the ancient shingles of the cliffs ; the formation of this shingle, he 

 maintains, may belong to a time not far removed from our own day. 



Turning to the Westleton Beds, be notices that they are essentially 

 " drifts," the component pebbles not having been shaped on the spot, 

 but brought as pebbles from elsewhere ; and he gives reasons for 

 supposing that they were derived from pebbly beds in the Lower 

 London Tertiary group and in the Eed Crag. He also maintains 

 that the shells of the Westleton Beds and Bure Valley Beds are 

 derived from Crag deposits. Eeasons are given in the paper for 

 supposing that the pebbles of the Westleton shingle of East Anglia 

 came from the west, and that this moved eastward from the plateau 

 of Suffolk towards the sea. It is considered that these beds can 

 only be explained by a tumultuous diluvial movement. 



2. ''Supplementary Notes on the Systematic Position of the 

 Trilobites." By H. M. Bernard, Esq., M.A., F.L.S., F.Z.S. 

 (Communicated by the President.) 



Since the publication of a paper by the author in the Quarterly 



