256 E. T. Newton — Fre- Glacial Mammalia. 



by large specimens of Cijclostoma elegans, like those found in Northern 

 Italy, the Cijrena fluminalis now living in the zone from the Caspian 

 to Syria, larger specimens of Helix arbustorum, also pointing to a 

 higher temperature, and Vitrina elongata, now living in the South 

 of France, and these again by such plants as the Ficus carica. 



The conclusion from these various facts seems inevitable that just 

 as the companions and the various conditions of life which sur- 

 rounded the Mammoth in Europe were the same as those in Siberia, 

 so its mode of life was the same. That it lived and died where its 

 remains are now found in a climate marked by a temperate character 

 all the year round, and further that the causes of its disappearance 

 were probably the same in both. The consideration of this last very 

 critical question I propose, with the permission of the Editors, to 

 postpone to another paper. I ought to state that this paper was 

 written some time before the publication and entirely independent 

 of Mr. Geikie's very admirable work on " Prehistoric Europe." 



IV. — Notes on the Yektebrata of the Pre-Glacial Forest 

 Bed Series of the East of England. 



By E. T. Newton, P.G.S. 

 (Published by permission of the Director- General of the Geological Survey.) 



PAET IV.— EODENTIA AND INSECTIVOEA. 



AS in the previous notes (Geol. Mag. Decade II. Vol. VII. No. 

 10, p. 447, 1880), so in the present, it is deemed desirable to 

 give in the first instance a complete list of all the examples of the 

 groups under consideration, which have hitherto been recorded, and 

 then, having examined each critically, finally to give a corrected 

 list. 



EODENTIA AND InSECTIVOKA SAID TO HAVE BEEN POUND IN THE " FoREST BeD 



Series." (See also corrected list, at p. 259.) 



Trogontherium Ouvieri. Sciurus, sp. 



Castor fiber {= C. Europceus). Mus musculus. 



Arvicola amphibia. Talpa EnropcBa. 



agrestia. 



■ arvalis. 



Sorex fodiens. 

 — — remifer, 

 Myogale moschata. 



EODENTIA. 



Trogontherium. — In the year 1846, Prof. Owen referred certain 

 lower jaws of a large Eodent, obtained from the Forest Bed, to 

 Fisher's genus Trogontherium, with the specific name of T. Cuvieri 

 (Brit. Foss. Mams. p. 184). Sir C. Lyell had already referred to 

 these specimens in 1840 (London and Edinb. Phil. Mag. ser. 3, vol. 

 xvi. p. 345), on Prof. Owen's authority, as belonging in all pro- 

 bability to a species of Beaver distinct from the recent one. English 

 writers have, since the year 1846, almost without an exception, 

 received Prof. Owen's determination ; but on the Continent there 

 has been great diversity of opinion, so much so, that the synonymy 

 has become much too complicated for any attempt to be made to 



