230 Dr. H. Hicks — Plutonides, St. Baud's. 



quite reached it. After our visit a gale, in November 1893, bared 

 the foundations of the church : plans were made, which have been 

 preserved. On Wednesday, January 23rd, 1895, a storm arose, 

 described by a resident as beyond anything he had seen. At 

 sis p.m. the waves were breaking furiously against the tower and 

 their spray was flying over its summit. At seven it had fallen. 



The line of sand-hills forms a defence against the sea for a level 

 tract of cultivated country behind. My sketch indicates a breadth, 

 of about twenty yards for this rampart and a height of some twenty 

 or thirty feet. An account says that "the havoc to the sand-banks 

 baffles description .... they are not half their original size in 

 breadth and height .... the sea overflowed the gap- way and the 

 manor house was in danger of being inundated .... Eccles has 

 had a very narrow escape of the catastrophe which happened in 

 1605, when hundreds of acres of land, with sixty-six houses and 

 their inhabitants, were swept away in one night." 



Lyell adduces this ancient ruin among his evidences of the 

 encroachment of the sea on the eastern coasts of England. His 

 figures appear faithful, for the appearance and dimensions of the 

 sand-dunes at our visit were just the same as in them. The figure 

 of 1839 shows the tower emerging frOra the very centre of the line 

 of sand-hills. That of 1862 shows it nearly free of them on their 

 seaward face, at a distance from their centre about equal to its own 

 height. As its height was about forty feet this might indicate that 

 the sand-hills had travelled inland about forty feet in twenty-three 

 years. At our visit in 1893 we found the line of dunes entirely 

 separated from the tower, and we measured its distance from their 

 centre as about thirty yards, which gives an advance of ninety feet 

 in fifty-four years. Lyell alludes to the possibility of a subsidence 

 in the coast, but this is not required to explain the march of the 

 sand-dunes. 



1 have to thank Professor Bonney for the loan of his notes, and 

 the Eev. J. S. Whitney for an answer to enquiries, and for an extract 

 from the "Eastern Daily Press" of January 26th, 1895, containing 

 an account of the event. 



X, — On the GrENUS Plutonides (non Plutonia) from the 



Cambrian Rooks or St. David's. 



By Henry Hicks, M.D., F.R.S., F.G.S. 



QUITE recently, Mr. B. B. Woodward, F.G.S., of the British 

 Museum (Natural History), called my attention, for the first 

 time, to the fact that the name Plutonia, which I adopted for 

 a genus of Trilobites in 1868, had previously been, used by Stabile 

 (Atti. Soc. Ital. Sci. Nat, vii, p. 121, 1864) for a genus of Mollusca. 

 As Stabile's generic term has therefore a priority of four years it 

 is necessary that I should rename the Trilobite, and it has been 

 suggested to me by Mr. Belinfante, B.Sc, Assist. Sec. Geol. Soc, 

 that Plutonides would be the most suitable term and the one least 

 likely to lead to confusion. In the Eeport of the British Association 

 for 1868, p. 69, where the genus is first mentioned, after describing 



