INDEX. 



131 



Didacna, OY. 

 Dipsas, 91. 

 Diseiles, 64. 

 Dftrupa, 111. 

 Dolabra, 29, 88. 



? alpina, 58. 

 Donacites, 100. 

 Dostia, 109. 

 Dreissena, 30. 

 Dreissenidae, 30. 

 Dysnomia, 91. 



E. 



Eehinodermata (Jurassic), 6G. 

 Edmondia? Calhouni, 62. 

 Ellipsolithes, 64, 121. 

 Ellipto, 92. 

 Elphidiura, 11. 

 Endoceras, 63. 

 Entalis, 110. 

 Eriographis, 127. 

 Erycinella, 34. 

 Etonia, TO. 

 Eumicrotis, 28. 

 Eumicrotis, 53. 



curia, 81. 



garforthensis, 54. 



Halli, 54. 



Hawni, 54. 



Hawni, var. ovata, 55. 



radiatus, 54. 



speluncaria, 53. 



variabilis, 54. 

 Eurydesma, 28. 

 Eurynia, 91. 

 Exochorynchus, 42. 



F. 



Eabricia, 12'7. 

 Pilograna, 12T. 

 Flabellatse, 108. 

 Foraminifera (Carboniferous), 



11. 

 Fusulina, 13. 



eylindrica, 14. 



hyperboiea, 14. 



G. 



;a, 114. 

 Gasteropoda (Carboniferous), 



44. 

 Gasteropoda (Jurassic), 105. 

 Gasteropoda (Potsdam Pe- 

 riod), 4. 

 Gastrocceli, 125. 

 Gastrosiphites, 125. 

 Gervillia, 56. 

 Glebula, 91. 

 Gomphoceras, 63. 

 Gonambonites, 24. 

 Goniatitidse, 117. 

 Goniomya, 36. 

 Goodallia, 93. 

 Grammatodon, 88. 

 Grammatodon, 89. 



inornatus, 90. 

 Gresslya, 36. 

 Gryphaea, '72. 

 Gryphsea, 74. 



arcuata, 74. 



calceola, 74- 



calceola, var. Nebrascensis, 

 74. 

 Gryphites, 53. 

 Gryphorhynchus, 28. 

 Gyraulus, 105, 106. 

 Gyraulus, 107. 

 Gyroceras, 65. 

 Gyrorbis, 112. 



H 



Haliotidse, 45. 

 Halobia, 28. 

 Hamites, 118. 

 Hamuliua, 118. 

 Hamulus, 127. 

 Hastati, 125. 

 Helicerus, 124. 

 Helicoceras, 118. 

 Helicotoma, 45. 

 Eelisoma, 107. 

 Helonyx, 110. 

 Helix cornea, 106. 

 Helix contorta, 107. 

 Helix vivipara, 114. 

 Helmintholithus, 126. 

 Hemilasterna, 91. 



Hemipecten, 48. 

 Hemipronites, 25, 26. 

 Semipronites, 24. 



alternatus, 26. 



aretistriatus, 26. 



crassus, 26. 



deformis, 26. 



proximus, 26. 



tumida, 24, 25. 



Woolworthanus, 26. 

 Hemithyris, 70. 

 Henterum, 114. 

 Herse, 6, 8. 

 Heteroceras, 118. 

 Heterocrinus, 67. 

 Heterostegina, 11. 

 Hettangia, 95. 

 Hiatella, 36. 



sulcata, 36. 

 Hibolithes, 124. 

 Hippagus, 84. 



isocardoides, 84. 

 Hipparionyx proximus, 26. 

 Hippopodium, 34. 

 Homomya, 36. 

 Hortolus, 64. 

 Huronia, 63. 

 Hypothyris, 70. 

 Hyriopsis, 91. 

 Hysterolites, 17, 22. 



I. 



Ichthyosyagon, 118. 

 Imbricati, 119. 

 Inoceramus, 28. 

 Inoperculata (Jurassic), 105. 

 Iridea, 91. 

 Iridina, 91. 

 Isoarca, 88. 



Jurassic Period, 66. 



Klitambonites, 23, 24. 



