EXPLANATION OF THE PLATES AND WOODCUTS. 



Figs. 4, 5 and 6. Fragments of jaw with teeth of the Labyrinthodon Josgeri, from the Warwick 



sandstone. 

 Fig. 7, Outside view of a portion of the upper jaw of the Labyrinthodon leptognathus (PI, 



XLIIL figs. 1—3.). 



* Two teeth of the same jaw, magnified. 



Fig. 8. Portion of left ramus of lower jaw oi Labyrinthodon leptognathus : p. 521-523. 



* Two teeth of the same, magnified. 

 Fig. 9. Upper view of the same bone. 



Plate XLV. 



Figs. 1 — 4. Diflferent views of a portion of a vertebra oi Labyrinthodon pachygnathus : p. 532. 

 Figs. 5 — 8. Different views of a fractured \ertehra o{ Labyrinthodon leptognathus : p. 523-524. 

 Figs. 9 and 10. Two views of the episternal bone of a Labyrinthodon : p. 524. 

 Figs. 11 — 13. Three views of the proximal half of the humerus of Labyrinthodon pachygna- 



thus : p. 533. 

 Fig. 14. Proximal articulation of the same fossil: p. 533. 



Fig. 15. Fractured end of the same fossil, showing the medullary cavity : p. 533. 

 Fig. 16. External view of the right iUac bone of the Labyrinthodon pachygnathus : p. 533. 

 Fig. 17. Internal view of the same bone : p. 533. 



Fig. 18. Head of the femur of the same species oi Labyrinthodon: p. 535. 

 Fig. 19. Coprolite from the same quarry. 



Plate XLVI. 



Fig. 1. Group of bones of the Labyrinthodon [Anisopus) scutulatus : p. 538. 

 h, Humerus : p. 539. 

 ff, Femora : p. 539. 

 1 1, Tibiae : p. 539. 

 The fractured ends of the tibia and of a large (jaw ?) bone are given above the group. 

 Fig. v. Shows the opposite surface of the large bone. 

 Fig. 2. Upper view of a vertebra of the same fossil: p. 539. 

 Fig. 3. The same vertebra magnified, showing the expanded and sculptured summit of the 



spinous process. 

 Fig. 4. Side-view, and two ends of the same vertebra, natural size. 

 Fig. 5. A dermal scute, four times magnified, of the same fossil : p. 538. 

 Fig. 6. Group of cranial bones of the Labyrinthodon pachygnathus : p. 538. 

 Fig. 7' Side-view of the principal of the preceding bones. 



Plate XLVIL 



Fig. 1. Outside view of a portion of the left ramus of the lower jaw of the Labyrinthodon 



Jaegeri, from Guy's Cliff: p. 537- 

 Fig. I*. View of the alveoli of the same fossil : p. 537. 

 Fig. 2. Outside view of a portion of the left ramus of the lower jaw of the same species, 



from the same locality : p. 537. 

 Fig, 3. Inside view of the anterior end of the same fossil, showing the beginning of the 

 groove for the dentary piece : p. 537. 



