36. _Licrophycus Ottawaensis_.
37. _Astylospongia proemorsa_.
38. _Stromatopora rugosa_.
39. _Dichograptus octobrachiatus_.
40. _Didymograptus divaricatus_.
41. _Diplograptus pristis_.
42. _Phyllograptus typus_.
43. _Zaphrentis Stokesi_.
44. _Strombodes pentagonus_.
45. _Columnaria alveolata_.
46. Group of Cystideans.
47. Group of Lower Silurian Crustaceans.
48. _Ptilodictya falciformis_.
49. _Ptilodictya Schafferi_.
50. Group of Lower Silurian Brachiopods.
51. Group of Lower Silurian Brachiopods.
52. _Murchisonia gracilis_.
53. _Bellerophon argo_.
54. _Maclurea crenulata_.
55. _Orthoceras crebriseptum_.
56. Restoration of _Orthoceras_.
57. Generalised section of the Upper Silurian rocks.
58. _Monograptus priodon_.
59. _Halysites catenularia_ and _H. agglomerata_.
60. Group of Upper Silurian Star-fishes.
61. _Protaster Sedgwickii_.
62. Group of Upper Silurian Crinoids.
63. _Planolites vulgaris_.
64. Group of Upper Silurian Trilobites.
65. _Pterygotus Anglicus_.
66. Group of Upper Silurian _Polyzoa_.
67. _Spirifera hysterica_.
68. Group of Upper Silurian Brachiopods.
69. Group of Upper Silurian Brachiopods.
70. _Pentamerus Knightii_.
71. _Cardiola interrupta, C. fibrosa_, and _Pterinoea
subfalcata_.
72. Group of Upper Silurian Univalves.
73. _Tentaculites ornatus_.
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