AND ADDITIONS TO THE FAUNA. 159 



Paludestvina mavginata, Mich. 

 P. veutrosa, Mont. 

 Unio tumiclus, Retz. 

 Corhicula flnminalis, Miill . 

 SpJiacriitm nminanmn, Kobelt. 

 Pisidiiim amnicnm, Miill. 

 P. fonfinale, Drap. 



Fifteen of these are new records from the Uphall beds — 

 viz., Agviolimax agrcstis, Vitrea crystallina, Avion ater, Punctnm 

 pygmaeuin, Pyramidida rotundata, Helicella itala, Helix hortensis, 

 Clausilia hniiinata, C. bidentata, Planovbis glaber, P. spivorbis, Valvata 

 cvistata, Paludestvina ventvosa, P. mavginata, and Sphacvium 

 mainanum ; whilst we have been able to verify four records of 

 which no specimens were known, namely, Pupa muscovuiu, Vevtigo 

 antivevtigo, Cavychium minimum, and Ancylus fluviatilis. 



The commonest shells are those of Covbicula fiuminalis and 

 Helix nemovalis. The latter are mostly 5-banded. Several have 

 all the bands merged whilst we obtained one 3-, two 4-, and a 

 couple of 6-banded specimens. 



Avion atev is entirely new to the Pleistocene, and Helix 

 hovtensis to the Thames Basin Brickearths. As the former is 

 represented by a single granule and as the latter is not easily 

 distinguishable, in a fossil state, from Helix nemovalis, we sub- 

 mitted them to Messrs. A. S. Kennard, and B. B. Woodward, 

 who consider the identification to be correct. 



Enlota fvuticum, Paludestvina mavginata, Covbicula plumiualis and 

 Sphaevium mainanum are all extinct in Britain, though still living 

 elsewhere. 



The specimens of Helicella itala differ considerably from the 

 existing forms and are identical with the only other known 

 specimen from the Thames Valley Drift, viz., the one which Mr. 

 L. W. J. Abbott obtained from the cutting at West Thurrock ' 

 and which is now in tlie British Museum (Natural History). 



Mr. Martin A. C. Hinton whose recent paper on the 

 " Pleistocene Deposits of the Ilford and Wanstead District " - 

 should be read in connection with this, has kindly gone through 

 our Mammahan remains, and has recognised, among other 



1 See A. S. KeiuiLiid and B. B. Woodward. " Post-Pliocene Non-Marine Mollusca of 

 Essex." Essex Naturalist, vol. x, (1897), p. 87-iog. 



2 Proceedings Geologists' Assoc, Vol. xvi., part for Feb., 1900 fin the press). See 

 abstract of this paper, by the author, with some further observations, in the present part of 

 the Essex Naturalist, post. — Ed. 



