PLATE XXIV. 
Fids. 1-15. Parts of the skeleton of a single indiviiliial of Clasle^ intef/er, natural size. Pago 41. 
Fig. 1. Part of right scapular arch, external view. 
Fig. 2. Part of left side of superior cranial wall, with free margin, superior view. 
Fig. :5. Another and smaller superior cranial bone, from above : a, sutural edge. 
Fig. 1. First vertebra, anterior face. 
Fig. 5. A dorsal vertebra, from below. 
Fig. 6. A caudal vertebra, right side : a, from below. 
I'lG. 7. A more posterior caudal, lateral view : a, inferior view. 
Fig. 8. An osseous fin-ray, fragment, anterior view : a, posterior side ; h, section. 
Figs. 9-15. Scales; 9-10, pierced by the lateral line; a, interior views; b, edge view. 
Fig. 16. A dorsal vertebra of a second and smaller individual of Clastes integer, from the inferior side: a, 
from the left sidi;; ft, the posterior articular surface. 
Figs. 17-31. Fragments of four individuals ot Dermalemgs costilatm, natural size. Figs. 17-20 belong to 
No. 1; 21-22, to No 2; 23-25, to No. 3 ; and 26-31, to No. 4. Page 52. 
Fig. 17. Part of a vertebral bone, superior view. 
Fig. 18. Part of a vertebral bone, superior view. 
Fig 19. Part of a costal bone, superior view: a, edge view. 
Fig. 20. Part of a costal bone, superior view : a, edge view. 
Fig. 21. Part of a costal bone, superior view : a, edge view. 
Fig. 22, Broken vertebral bone, from above. 
Fig. 23. Part of a costal bone, from above. 
Fig. 24. Anterior part of a vertebral bone. 
Fig. 25. Posterior part of a vertebral bone. 
Fig. 26. Part of the margin of the plastron. 
Fig. 27. Part of a costal bone, from above. 
Fig. 28. The same costal, from below, 
Fig. 29. Half of a marginal bone, from above; a, the sutural edge. 
Fig. 30. Costal with suture for ascending process of plastron, from above: a, from below. 
Fig. 31. Part of left episternal, from above. 
Fig. 32. Fragment or section of the shell of Ba'dna arenosa, from above. Pago 52. 
Figs. 33-35. Caudal vertebrm of a tortoise, described on page 43, belonging to a single animal, natural 
size: a, anterior view; 6, posterior; c, superior and inferior views. 
Figs. 36-39. Fragments of Hadriani, one-half natural size. 
Fig. 36. Posterior process of right postabdomiual bone of Uadrianus comoiiii: a, inner edge; ft, inferior 
side. Page 58. 
Fig. 37. Corresponding part of another Hadrianus, the inner portion broken away ; a, view of the broken 
inner edge. 
Fig. 38. Posterior process of left postabdominal bone of another Hadrianus, from above. 
Fig. 39. Right episternal, median part of anterior border of anterior lobe, inferior side. 
Fig. 40. Scale of the lateral line of a specimen of Clastes; a, the opposite side of the same scale, which is 
split in its vertical plane, exhibiting the direction of the perforating canal. 
Fig. 41. Scale from the anterior region of another Clastes. 
