Geology and Paleontology. 641 
gium) are usually considered as a separate horizon, but Prof. Prest- 
wich points out that there is nothing in their molluscan fauna to 
warrant them as older than the Landenian, while the presence of 
sixty-two plants, all but one new and peculiar to the locality, may 
be simply due to the proximity of land. He objects also to the 
correlation of the Sables de Bracheux with the Lower Landenian 
and Thanet Sands, pointing that out of the eighty-two species of 
mollusea found in the Bracheux Sands only six seem to be common 
to the Thanet Sands and five to the Lower Landenian, while ten 
are found in the Woolwich beds. A table gives Prof. Prestwich’s 
views upon these and other points in the correlation of these impor- 
tant beds of the London, Belgian and Parisian basins. 
A. Weithofer has recently described several species of bats from 
the phosphorites of the central plateau of France, including Pseu- 
dorhinolophus, sp., Alastor heliophigas., nov. gen. and sp., Rhino- 
lophus dubius, V espertiliavus, sp., Taphozous, sp., Neoremantis adi- 
chaster, nov. gen. and sp. Fossil Cheiroptera, like fossil birds, are 
rare. 
ceros. The cranium of the Elasmotherium is larger than that of 
Rhinoceros tichorhinus, the example in the Museum of Paris meas- 
uring 98 centimetres in total length. The sinus of the frontal 
? 
very much reduced. The nostrils are completely separated by a 
PR t and the nasals are narrow and smooth, showing that they 
cd not bear a horn, as was the case in R.tichorhinus. The extrem- 
authors, of a prehensile lip. The twenty molars of Elasmothe- 
those have longer crowns, and are much more complexly folded than 
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