70 PROCEEDINGS OF THE MALACOLOGICAL SOCIETY. 



DESCRIPTIONS OF SOME NEW OR LITTLE KNOWN SHELLS 

 OF PULMONATE MOLLUSCA FROM THE OLIGOCENE AND 

 EOCENE FORMATIONS OF ENGLAND. 



By E.. BuLLEX Newton, F.G.S., etc., and Geo. F. Harris, F.G.S., etc. 



Read January Vlth, 1894. 



PLATE VI. 



The shells referred to in the present paper were collected many- 

 years ago by the late Frederick Edwards, and now form part of 

 the "Edwards Collection " in the Natural History Museum. 



In 1852 Mr. Edwards contributed to the Palajontographical Society 

 his famous memoir on the British Eocene Pulmonata, since which time 

 the only paper of importance has been that of ^Mr. J. S. Gardner, on 

 " The Land Mollusca of the Eocenes," published in the Geological 

 Magazine (1885, pp. 241-251). This included a review of many 

 of Edwards' species, but did not deal, except very briefly and without 

 figures, with the new shells which were named in MS. by Mr. Edwards, 

 and which formed part of his collection. The purport of the present 

 paper, therefore, is to give these names a real significance by figures 

 and descriptions, and so to place them on a scientific basis. 



Eight new forms are described, and remarks made upon two or 

 three established species, to which some of the specimens have been 

 referred. The majority were obtained from the Oligocene formation 

 in the Isle of "Wight, whilst a few others came from the Lower Eocene 

 deposits of the London Basin. 



For the sake of clearness we herewith name the beds in descending 

 order which constitute these two formations: — 



Oligocene. — Hempstead, Bembridgo, Osborne and Hcadon Beds. 



Eocene. — Barton, Bracklesham, London Clay, Oldhaven, Woolwich 

 and Beading, and Thanet Beds. 



HELIX, Linn., 1767. 



Helix pseudo-globosa, (?) Orbigny. PI. VI. Fig. 15. 



Helix fflobosa, J, Sowerby. — Mineral Conchology, 1817, vol. ii. 

 pi. clxx. ; non Montagu, 1803. 



Helix pseudo-fflobosa, Orbigny. — Prod. Pal. Strut. 1850, vol. ii. p. 410. 



Helix glohosa, F. E. Edwards. — Mon. Pal. Soc. 1852, p. 63, pi. x. 

 fig. 2. 



Helix (Caloeochlea) globosa, J. S. Gardner. — Geol. Mag. 1885, pi. vi. 

 fig. 6, pp. 248, 249. 



Helix Mheridgei (Edwards MS.), E,. B. Newton. — Syst. List 

 Edwards Coll. British Museum, 1891, p. 271, 



The specimen here referred to probably represents the young stage 



