PLATE I. 



Ovibos moschatus, Blainville. 



Fig. 



1. Basi-occipital of Ovibos moschatus, from the Lower Brickearths, Cray ford, Kent. 



In the Museum of the Geological Survey. 



2. Basi-occipital of Ooibos moschatus, North America. British Museum. 



3. Basi-occipital Bubalus caffer. British Museum. 



4. Basi-occipital of Argali, Caprovis Argali of Ladak. British Museum. 



