TAB. XII. 



Right Humerus of Pelorosaurus Conyhearii, one sixth natural size. 



Fig. 



1. Back view. 



2. Front view. 



3. Proximal end. 



4. Section of middle of shaft, showing the medullary cavity. 



5. Distal end. 



From the Wealden of Tilgate Forest. British Museum. 



