132 



INDEX. 



L. 



La;vicardiuin, 9T. 

 Liimellibranchiata (Carbonif.), 



27. 

 Lamellibrancliiata (Permian 



reriod), 48. 

 Lamellibraiichiata (Jurassic), 



72 

 Lamprostoma, 108. 

 Lampsilis, 91. 

 Lanceolaria, 91. 

 Larina, 114. 



Carditamera, 34. 

 Lciorbynchus, TO. 

 LeptiEiia, 23. 

 Leptodomus. 



fragilis, 39. 



topekaensis, 40. 



truncatus, 40. 



granosus, 40. 

 LimnseidsB, 105. 

 Limnseinse, 105. 

 Limnium, 92. 



Limnophila (Jurassic), 105. 

 Limnostracitis, 72. 

 Liraopsis, 88. 

 Lingula, 68. 



anatina, 2, 68. 



brevirostris, 69. 



Beanii, 69. 



cuneata, 2. 



prima, 3. 

 Lingulcpis, 69. 

 Lingidepis, 1. 



dakotensis, 3. 



pinniformis, 2. 



prima, 3. 

 Lingulidse (Jurassic), 68. 

 Lingulidee, 1. 

 Liocardiura, 97. 

 Liopistha, 97. 

 Lioplacodes, 115. 



veiernus, 116. 

 Liopla.x, 114, 115. 

 Lirodon, 87. 

 Lissees, Les, €S. 

 Litharca, 88. 

 Lithocardium, 97. 

 Lilhophaginse, 84. 

 Lithophagus, 84. 

 Lituitis, 64. 

 Lopha, 72. 

 Lunarca, 88. 



Lutetia, 34. 

 Lyogyrus, 112. 

 Lyonsia, 36. 



concava, 41. 

 Lyrodon, 82. 



M. 



Macrodon, 88. 

 Macrodontinse, 88. 

 Macrodoiitinije (Jurassic), 89. 

 3Iaeropihyisa, 105. 

 Mactrina, 93. 

 Mactromya, 36. 

 Maldia, 60. 

 MaUetia, 60. 

 Mallctinae, 60. 

 Margarita, 92. 

 Margaritana, 91. 

 Margaritaria, 36, 104. 

 Margaritifera, 28, 79. 

 Margaron, 91. 

 Martinia, 16, 17. 

 Martinia, 19. 

 Matheria, 34. 

 Megalodon, 34. 

 Megalomus, 88. 

 Megambonia, 28, 88. 

 Melania, 115, 116. 



amarula, 116. 



veterna, 115. 

 Melaniidse, 118. 

 Melantho, 113. 

 Melininse, 28. 

 Meekia, 96. 

 Menetus, 107. 

 Menetus, IOC. 

 Merista, 16. 

 Meristella (Goniocoelia) unisul- 



cata, 16. 

 Metaptera, 91. 

 Microraya, 91. 

 Modiola, 85. 



cancellata, 87. 



forraosa, 86. 



Mcckii, 86. 



niinuta, 86. 



Wyoraingensis, 52. 

 Modiolopsis, 85. 

 Modiolus, 85. 

 MoUusca (Carboniferous Age), 



16. 

 MoUusca (Jurassic), 68. 



Mollusca (Permian Period), 4S. 

 MoUusca (Potsdam Period), 1. 

 Monocondyllsea, 91. 

 Monodacna, 97. 

 Monodontina, 91. 

 Monotis, 53. 



Hawni, 54. 



interim vigata, 79. 



salinaria, 53, 54. 



substriata, 81. 

 Multicostalx, 103. 

 Munsteria, 118. 

 Murcbisonia, 45. 

 Mya, 42. 



dilatata, 43, 44. 



pectorum, 92. 



pubescens, 101. 

 Myacites, 99. 

 Myacites, 36. 



Albertii, 100. 



elongatus, 100. 



mactroides, 100. 



musculoides, 100. 



nebrascensis, 100. 



obtusus, 100. 



radiatus, 100. 



subellipticus, 101. 



ventricosus, 100. 

 3Iyalina, 30. 



angulata, 30, 31. 



avicidoides, 51. 



lamellosa, 30. 



perattenuata, 30. 



perattenuaia, 32. 



permiana, 52. 



subquadrata, 32. 

 Mycetopus, 91. 

 Mycinodon, 34. 

 Myoconcha, 34. 

 Myodora, 36. 

 Myophoria, 57. 

 Myopsis, 99. 

 Myrina, 84. 

 Mytilidae, 84. 

 Mytilimeria, 36. 

 Mytilus, 84, 85. 



cancellatus, 87. 



(Myalina) concavus, 52. 



birundo, 79. 



modiolus, 85. 



partcnus, 86. 



