_Lanistes_—53, 58, 81. _Lanistes antiquus_—51. _Lanistes bartonianus_—34, 60. _Lanistes carinatus_—60. Lava Flows—15, 33-34, 53, 56-58, 61-62, 75. Leakage through ridge of Wadi Rayan—23. _Leda_—35, 39. Lenticular sand-beds—55. _Leptodon_—69. Levels made from Rayan to Nile Valley—17. Libyan Desert, Area, etc., of—15, 88. Liernur Bey—17-18, 87. Liernur, Wadi—17, 19. Lignite—51, 53. Ligurian beds—43, 64, 88. Limb-bones of vertebrates—52. Limestones—12, 15-16, 20-25, 29, 33-42, 45-53, 56-57, 59-62, 65-66, 73-77. _Limnæa mœris_—81. _Limnæa natalensis_—81. _Limnæa palustris_—81. Linant de Bellefonds—16, 83, 88. _Linthia_—52. Little Rayan—22. Littoral deposits—66. Loam—39. _Lobocarcinus Paulino-Wurtembergicus_—36. Lower Headon Hill beds—58. Lower Oligocene—53-70. Lucas, A.—9, 14, 22, 54, 88. _Lucina_—36, 39, 45-46, 48, 53, 58. _Lucina calliste_—90. _Lucina consobrina_—37. _Lucina Defrancei_—37. _Lucina fajumensis_—90. _Lucina fortisiana_—51. _Lucina gibbosula_—90. _Lucina globulosa_—37. _Lucina pharaonis_—35, 43, 45, 51, 90. _Lucina polythele_—90. _Lucina pomum_—43. _Lucina Rai_—90. _Lucina sinuosa_—90. _Lucina_ cf. _tabulata_—43. Lulu, Wadi—17. Lydekker, R.—70. M _Macrosolen Hollowaysi_—35, 46, 51. _Mactra compressa_—43. Madagascar and Africa, Connection of—68. Mammalia, Fossil—34-35, 55, 62, 38-70, 80, 87. Mammillary weathering—57. Mandibles of vertebrates—52. Marls—18, 29-30, 33-35, 37, 39-42, 49-50, 53, 55, 61-62, 73-74, 76. Marls in lake—12. Marls, Saliferous—19. Marly clays—29-30, 57, 62. Marly gypsum—77. Marly limestones—33, 35, 37-39, 47-48, 62, 77. Marsh land—26, 40, 82. Martens, Prof. von.—60, 81, 88. Masaigega, Wadi—19. Masaret-Abusia—40. Mastodons—68-69. Mayer-Eymar, K.—37, 43, 49, 53, 64, 88. Mazana—17, 19. Medinet el Fayûm—29-30, 41, 82-83. Mediterranean fauna—81. Medum—40, 77 (pyramid). _Megalohyrax_—10. _Megalohyrax eocænus_—34, 59, 70. _Megalohyrax minor_—34, 70. _Melania_—53, 57-60. _Melania muricata_—60. _Melania_ cf. _Nysti_—60, 64. _Melania tuberculata_—81, 84. _Melanopsis_—81. _Melanopsis_ fauna—81. _Melongena nilotica_, var. _bicarinata_—51. Menesi Ali, Ezba—17. _Meretrix nitidula_—51. _Meretrix parisiensis_—51. _Mesalia_—51. _Mesalia fasciata_—35, 51. _Mesalia oxycrepis_—51. Middle Eocene—9-10, 15, 32-33, 35-53, 54-55, 57-58, 60, 62, 64, 66-67, 70, 80. Migrations of mammalia—69-70. Miocene beds suggested—64. Miocene, Lower—34, 54, 70. Miocene, Lower, of Orient European in type—70. Miocene strata, Absence of—34, 71. _Mitra_—36. _Mœriophis Schweinfurthi_—50, 70. Mœris (see Lake Mœris). _Mœritherium_—10, 52, 59, 68, 70. _Mœritherium gracilis_—35, 51, 70. _Mœritherium Lyonsi_—34, 35, 51, 59, 70.