part 3 



PLEISTOCENE DEPOSITS VKol M) CAMBRIDGE. 



•J2I> 



and the woolly rhinoceros, which survived until the end of Palaeo- 

 lithic times. 1 believe that this period was marked by minor 



oscillations: but, as no evidence of this has yet been found in the 

 immediate vicinity of Cambridge, 1 will not dwell upon tins 

 subject, and merely note that the period of maximum cold indi- 

 cated by the fluviatile deposits of Cambridge was that of the beds 

 of Barnwell Station with their Arctic plants and mollusca, and the 

 reindeer. 



1 hope that in this paper 1 have shown the existence of a rich 

 field for future work in the basin of the Great Ouse, and have 

 brought together a sufficient number of new observations to aid 

 in the prosecution of such researches. 



AlM'ENJMX I. 



The Xon-Makink Mollusca of the Cambridgeshire Gravels. 

 By Alfred Saisteb Kennard. F.d.S.. and Bebxard Barham 

 Woodward, F.L.S., Y.(\.*. 



Harrington. 



The first list of mollusca from the Pleistocene deposits at 

 Barrington was published by Mrs. T. McKenny Hughes in 1 s^s 

 and enumerated twenty-tour species. 1 In 1911 Prof.T. McKenny 

 Hughes recorded twenty-seven species, and added some details re- 

 garding one of the species. 2 In 1913 one of us (B. B. W.) 

 mentioned six species of Pisidium, five of which were new records/ 5 

 Several visits have been made to this deposit, and a large amount 

 of material has been washed, the conditions existing at the pit 

 greatly facilitating this work. We are, therefore, now able to 

 register fifty-four species, as follows: — ■ 



Limaa maximus Linne. Five ex- 

 ample. 



I j. arborum Bouchard-Cbantereaux. 



Abundant. 

 Igrioli/ma i agrestis(Lixm6). Common. 



Milax gagates (Draparnaud). One 

 example. 



Polita nitidula (Draparnaud). One 

 example. 



P. pura (Alder). Two examples. 



P.radiatula (Alder). Two examples. 



Zonitoides nitidus (Muller). One ex- 

 ample. 



Euconulns fulvns (Muller). Common. 



Arum <]>. One granule. 



Punetv/m pygmaeum (Draparnaud). 

 Abundant. 



Pyramidula rotundat a (Muller). Two 

 examples. 



Helicellavirgata(Da,i osta). Common. 

 | H. itala (Limn'). Common. 



Hygromia hispida (Linn'). Abundant. 



Acanth in ula aculeata ( M tiller). Three 

 examples. 



Vallonia pulchella (Muller). Com- 

 mon. 



■nl rirti Sterki. ( 'ommon. 



I. costata i Mullen. Common. 



HeUcodonta oUr<>\ut,i (Muller). Two 

 examples. 



Helir nemoralis Linne (fragments). 

 ('.minion. 



Cochlicopa lubrica (Muller). Abun- 

 dant. 



1 Geol. Mag. dec. 3. vol. v (1888) pp. 193 207. 

 - Proc. Geol. Assoc, vol. \.\ii. j>|». 271 75. 



3 B. B. Woodward, 'Catalogue of tin' British S] iea of Pisidim 



British Museum (Natural History). &c.' 1 1 » 1 3 . 



in the 



