﻿PLATE I. 



Mesozoic Pterosauria. 



Fig. 



1. Left side view of fore end of upper jaw of Coloborhynchus clavirostris. 



2. Front view of the same specimen. 



3. Hind view of ditto. 



4. Under or palatal view of ditto. 



5. Left side view of fore end of lower jaw of Pterodactylus Daviesii. 



6. Upper or oral view of the same specimen. 



7. Front or thenal view of proximal portion of right humerus of Pterodactylus Marderi. 



8. Back or anconal view of the same specimen. 



9. Proximal end, with the ' head ' or articular surface, of ditto. 



10. Front or thenal view of proximal portion of left humerus of Pterodactylus Manselii. 



11. Back or anconal view of the same specimen. 



12. Proximal end, with the head or articular surface, of do. 



1 3. Front or thenal view of distal end of right humerus of Pterodactylus (Dimorp/iodon) 



macroynx. 



14. Back or anconal view of the same specimen. 



15. Front or thenal view of distal portion of left humerus of Pterodactylus Pleydellii. 



16. Back or anconal view of the same specimen. 16'. Articular end of ditto. 



17. Front or thenal view of the proximal phalanx of the fourth or ' wing-finger ' of 



Pterodactylus Kiddii. 



18. Back or anconal view of the proximal phalanx of the ' wing-finger' of Pterodactylus 



Duncani. 



19. Outer side view of the proximal phalanx of the 'wing-finger' of Pterodactylus 



Aclandi. 



20. Outer side view of the proximal end of proximal phalanx of the ' wing-finger ' of 



Pterodactylus Manselii. 



21. Back or anconal view of the same specimen; 21*. articular -surface of ditto. 



22. Outer side view of proximal end of proximal phalanx of the 'wing-finger' of Ptero- 



dactylus Pleydellii. 



23. Back or anconal view of the same specimen. 23'. Articular surface of ditto. 



24. Articular surface of carpal bone of Pterodactylus. 



25. Opposite articular surface of the same specimen. 



26. Articular surface of homologous carpal bone of another kind of Pterodactyle. 



27. Opposite articular surface of the same specimen. 



28. Back or anconal view of second phalanx of ' wing-finger ' of a Pterodactyle. 



All the figures of the natural size-. 

 * 



The subject of figures 1 — 4, from the Hastings series of the Wealden, west of St.- 

 Leonard's-on-Sea, Sussex, is in the possession of its discoverer, Samuel H. Beckles, Esq., 

 F.R.S., &c. Those of the following figures are in the British Museum : — 5 and 6 are 

 from the Gault at Folkestone; 7, 8, 9, 13, 14, are from the Lias of Lyme Regis, Dorset- 

 shire; 10, 11, 12, 15, 16, 20, 21, 21*, 22, 23, 23', 24, 25, 26, 27, are from the 

 Kimmeridge Clay, Dorsetshire; 17, 18, 19, 28, are from the Oolitic State, Stonesfield, 

 Oxfordshire. 



