Index of Genera and Species. 



Acanthodes sulcatus, 15. 



gracilis, 15. 

 Acentrophorus chicopensis, 71. 

 Acrodus, 34. 



AUolepidotus americanus, 27, 66. 

 Amia, 18, 47, 57. 

 Asteracanthus, 34. 



Calamoichthys, 16. 

 Catopterus, 32, 47, 74. 



gracilis, 48. 



macrurus, 55. 



minor, 48, 55. 



ornatus, 48, 55. 



parvulus, 48. 



redfieldi, 48, 51, 54. 

 Cephalaspis murchisom, 14. 

 Ceratites trinodosus, 24. 

 Cheirolepis, 46. 

 Chondrosteus, 47. 

 Cladoselache fyleri, 16. 

 Climatius scutiger, 15. 

 Coelacanthus. 43. 



welleri, 44. 

 Cosmacanthus, 34. 



Dapedius, 60. 



Dictyopyge, 55. 



macrura, 55. 

 Diplurus, 31, 44, 74. 



longicaudatus, 44, 74. 

 Dipterus valeaciennesi, 17. 



Ecphora quadricostata, 39. 

 Eurynotus ceratocephalus, 66. 

 tenuiceps, 66. 



Heptanema paradoxum, 31, 44. 

 Heterolepidotus, 27. 

 Holoptychius, 34. 

 Hybodus, 30, 34. 



Ischypterus, 24, 57, 61. 

 agassizii, 61. 

 beardmorei, 71. 

 fultus, 64, 65. ' 

 latus, 66 

 macropterus, 64. 

 marshi. 61. 

 micropterus, 67. 

 minutus, 71. 

 newberryi, 67, 69. 

 parvus. 71. 

 ovatus, 6g. 

 tenuiceps, 66. 



Lepidosteus, 18, 47, 57. 

 Lepidotus, 60. 

 Leptolepis, 18. 



Macropoma, 43. 

 Megalonyx jeffersoni, 39. 

 Mesacanthus mitchelli, 15. 



Nematoptychius, 59. 



Palseoniscus, 59. 



agassizii, 61. 



fultus, 64. 



latus, 66. 



macropterus, 64. 



ovatus, 69. 

 Perleidus, 46, 47, 60, 72. 



altolepis, 27, 71. 

 Pbolidophorus, 18, 35, 71, 72. 

 Polypterus, 16. 

 Protopterus, 18. 

 Ptycholepis, 31, 73, 74. 



marshi, 73. 



Redfieldius, 47. 

 Rhabdolepis, 59. 

 Rhadinichthys, 59. 



Sagenodus, 18. 

 Semionotus, 24, 40, 57, 74. 



agassizii, 61, 62. 



bergeri, 58. 



brauni 71. 



capensis, 58. 



elegans, 71. 



fultus, 64. 



gigas, 70. 



lineatus, 71. 



marshi, 61. 



micropterus, 67. 



nilssoni, 58, 71. 



ovatus, 69. 



robustus, 70. 



tenuiceps, 66. 



Tetragonolepis, 69, 70. 



Undina, 43- 

 Urolepis, 32. 



Xenestes, 34. 



