INDEX. 



Acaraas, 1:21. 

 Acambouia, 1C. 

 Acanthotcuthis, 124. 

 Acanthotbiris, 70. 

 Achclois, 124. 

 Acieli, 125. 

 Actinodusma, 23. 

 Acuarii, 125. 

 Adacna, 97. 

 Adula, 84. 

 Aganides, 64. 

 Agraulis, 7. 

 Ayraulos, 7. 



ceticephalas, 10. 



Oweni, 9. 

 Alasmodonta, 91. 

 Alectryonia, 72. 

 Alina, 108. 

 Allorisma, 36. 



Tallin istrata, 41. 



? Cooperi, 44. 



? Leavenworthensis, 42, 43. 



minnehaba, 43. 



subcuneata, 37. 

 Alveolina, 13. 

 Ambocoelia, 17. 



pcmraula, 20. 

 Ambonychia, 28. 

 Ammonita, 121. 

 Ammonites, 118. 

 Ammonites, 121. 



bisulcatus, 121. 



cordatus, 122, 123. 



cordiformis, 122. 



Henryi, 123. 

 Ammonitidee, 116. 

 Ammonitidae, 117. 

 Amphipcplea, 105. 

 Amusmura, 48. 



17 March, 1805. 



Amygdalnm, 85. 

 Anadara, 88. 

 A n a ti fa, US. 

 Anatimya, 36, 104. 

 Anatinidse, 36. 

 Anatinidae (Jurassic), 99. 

 Anatomue, 45. 

 Aneulosa, 115. 

 Ancyloceras, 118. 

 Anisoceras, 118. 

 Anisomelus, 127. 

 Anisus, 106. 

 Anisus, 107. 



Annulata (Jurassic), 127. 

 Anodonta, 91. 

 Anodontopsis, 34, 59. 

 Anomia striata, 18. 

 Anomites, 17. 

 Anonica, 79. 

 Anthracomya, 36, 42. 

 Anthracoptera, 33. 

 Aplexa, 105. 

 Aploceras, 63, G4. 

 Aptychus, 118. 

 Area, 88. 



costata, 34. 



inornata, 89. 



Nose, 90. 

 Arcidte, 87. 

 Arcince, 88. 

 Arcomya, 36. 

 Argina, 88. 

 Argonaata, 121. 

 Arionellus, 7, 8. 



ceticephalas, 7. 



Oweni, 9. 



Articulata (Jurassic), 127. 

 Astarte, 34. 

 Aslarte, 93. 



fragilis, 94. 



inornata, 94. 

 Asturtella, 34. 



Astartila, 34. 

 A try pa, 16, 70. 

 Atrypa uuisulcata, 16. 

 Aturia, 64. 

 Aocella, 28, 53. 

 Aulosteges, 22. 

 Auricularia, 74. 

 Aurieulitcs, 74. 

 Avicula cignipes, 54. 



costata, 79. 



curta, 81. 



digitata, 79. 



demissa, 28. 



flabella, 29. 



hirundo, 28. 



(Monotis) tenuicostata, 81. 



Mu listen, 79. 



pleuroptera, 28. 



securiformis, 29. 



subfalcata, 28. 



substriata, 54. 



Aviculida: (Carboniferous), 27. 

 ATiculopccten, 29. 

 Aviculopeeten, 49. 



amplus, 50. 



doeens, 49. 



McCoyi, 50. 



Aviculopeeten (Permian), 49. 

 Aviculopectininse, 49. 

 Axinroa, 88. 

 Axininec, 88. 

 Axinns, 58. 



ovatus, 59. 



B. 



, 118. 

 Baculina, 118. 

 Balantium, 5. 

 Bakevellia, 56. 



( 129 ) 





