128 



15. Heliophyllum Canadense, Billings (C). 



16. " Colbornense, Nicholson (C). 



17. " Cayugaense, Billings (C). 



18. " Halli, Edw. and Haime (C and H). 



19. " sub-caespitosum, Nicholson (H). 



20. " proliferum, Nicholson (C). 



21. " Eriense, Billings (C). 



22. " colligatum, Billings (C). 



23. " exiguum, Billings (C and H). 



24. Petraia Logani, Nicholson (C). 



25. Amplexus Yandelli, Edw. and Haime (C). 



26. Diphyphyllum arundinaceum, Billings (C). 



27. " stramineum, Billings (C). 



28. " gracile, McCoy (C). 



29. Eridophyllum Simcoense, Billings (C). 



30. " Verneuilanum, Billings (C). 



31. Cystiphyllum Seneeaensc, Billings (C). 



32. " grande, Billings (C). 



33. " Americanum, .Ww. are^ Haime (C and H). 



34. " vesiculosum, Goldfuss (C and H). 



35. " sulcatum, Billings (C). 



36. Microcyclus discus, Meek and Worthen (H). 

 /-37. Haitneophyllum ordinatum, Billings (C). 



38. Syringopora nobilis, Billings (U). 



39. ' Hisingeri, Billings (C). 



40. " perelegans, Billings (C). 



41. " Maclurei, Billings (C). 



42. " laxata, Billings (C). 



43. Aulopora filiformis, Billings (C and H). 



44. " cornuta, Billings (C and H). 



45. " tubaeformis, Goldfuss (C). 



46. " umbellifera, Billings (C). 



47. Favosites Gothlandica, Lamarck, (C and H). 



48. " basaltica, Goldfuss 1 (C). 



49. " Forbesi, Edw. and Haime (C). 



50. " hemispherica, Yanddl and Shumard (C and H), 



51. " turbinata, Billings (C and H). 



52. " polymorpha, Goldfuss (C and H). 



53. " reticulata, De Blainville (C and H). 



54. " dubia, De Blainville (C). 



55. " cervicornis, De Blainville (C). 



56. " Chapmani, Nicholson (C). 



57. Alveolites labiosa, Billings (C). 



58. " Koemeri, Billings (C and H). 



59. " cryptodens, Billings (C). 



60. " conferta, Nicholson (C). 



61. " (Coenites?) distans, Nicholson (C). 



62. " ramulosa, Nicholson (C). 



63. " Billingsi, Nicholson (C). 



64. " Selwynii, Nicholson (C). 



65. " Goldfussi, Sittings (H). 



66. " Fischeri, Billings (C and H). 



67. ' frondosa, Nicholson (H), 



68. Striatopora Linneana, Billings (H). 



69. Trachypora elegantula, Billings (H). 



70. Chsetetes moniliforuiis, Nicholson (H). 



71. " Barrandi, Nicholson (H). 



72. t quadrangularis, Nicholson (H). 



