538 Geological Society, 



The present entrance to the cave is by a vertical drop from the 

 general level of the ' pavement.' This entrance is undoubtedly of 

 secondary origin, and is due to the falling-in of the weakened roof 

 of one of the passages. 



The specimens were derived from the cave-earth below the 

 surface-soil in one of the chambers of the cave. They comprise a 

 large series of small vertebrates, including Rodents, Insectivoies, 

 Amphibians, Birds, etc. Among the Rodents are some interest- 

 ing forms, the chief of which are the Arctic and Norwegian 

 Lemmings, and the Northern Vole. 



A large series of non-marine Mollusca was found along with 

 these remains, one species being of particular interest, namely 

 Pyramidula ruderata, only known in this country by its fossil 

 remains in Pleistocene deposits. 



The Pleistocene age of the remains is fully discussed, as well as 

 their possible mode of origin through a former swallow-hole. 



In many respects, the cave and its contents bear a striking 

 resemblance to the famous Ightham Fissures. 



March 23rd, 1910.— Prof. W. W. Watts, Sc.D., M.Sc, F.R.S., 

 President, in the Chair. 



The following communication was read : — 



'On Palceoxyris and other Allied Fossils from the Derbyshire and 

 Nottinghamshire Coalfield.' By Lewis Moysev, B.A., M.B., B.C., 

 F.G.S. 



After reviewing the bibliography of Palcaocoyris, the Author 

 records the finding of 22 specimens from Shipley Clay -pit (Derby- 

 shire), and over 130 from Digby Clay-pit (Nottinghamshire), also 

 several isolated examples from other localities in the district. 



He describes Palceoxyris helicteroides (Morris) : noting especially 

 the presence of a ' beak ', which had not, hitherto, been adequately 

 described. He then describes Palceoxyris prendeli (Lesquereux) 

 from Shipley Clay-pit, again noticing the formation of the ' beak '. 

 The discovery of Palceoxyris johnsoni (Kidston) from Digby is 

 noted, and it is proposed that this fossil be removed into the genus 

 Vetacapnula. 



The Author also describes a specimen of Vetacapsula cooperi 

 (Mackie & Crocker) from Newthorpe Clay-pit (Nottinghamshire). 

 He discusses the differences between this and other specimens, 

 and Mackie's type-specimen, but considers it unadvisable to multiply 

 species. 



A review of the bibliography of Fayolia is followed by the 

 description of a new species from Shipley Clay-pit ; also a small 

 compressed example is described as near to Fayolia dentata (Renault 

 & Zeiller). The Author then discusses the distribution of these 

 organisms in time, and their possible affinities with the egg-capsules 

 of the Cestracionts and the Chima^roids. 



