Pterosauria. 



PLATE 5. 



Fig. 



1. Section of the ulna of a Pelican (Pelecanm onocrotahs) , recent. 



2. Proximal end of one of the bones of the wing-finger of the Pterodactyfas 



compre-ssirostris. 



3. Portion of the shaft, probably of the femur of a large Pterodactyle ? 

 3'. Form of the transverse section of ditto. 



4. Three views of the distal trochlear joint of one of the long bones, probably 



the metacarpal of the wing-finger, of a large Pterodactyle ? 



5. Two views of a similar, but less mutilated bone. 



From the Middle Chalk of Kent. 



6. 6'. Two views of a fragment of one of the long bones of a large Pterodactyle. 



7. A portion of the shaft of a long bone of a large Pterodactyle. 



8. 8', 8". Three views of a portion of a humerus of a smaller Pterodactyle. 



From the lower Green-sand, near Cambridge. 



All the figures are of the natural size. 



