.
_Holopea; Subconica_.
_Holopella; obsoleta_.
_Holoptychius; nobilissimus_.
Holostomatous Univalves.
Holothurians.
_Holtenia_.
_Homacanthus_.
_Homalonotus; armatus_.
_Homo diluvii testis_.
Honeycomb Corals.
Hoofed Quadrupeds.
Hudson River Group.
Huronian Period; rocks of.
_Hyoena crocuta; speloea; Hipparionum_.
_Hyoenictis_.
_Hyoenodon_.
_Hyalea D'Orbignyana_.
_Hybodus_.
_Hydractinia_.
Hydroid Zoophytes.
_Hymenocaris vermicauda_.
_Hymenophyllites_.
_Hymenoptera_.
_Hyopotamus_.
_Hyperodapedon_.
_Hypsiprymnopsis_.
_Hystrix primigenius_.

_Ichthyocrinus loevis_.
_Ichthyornis; dispar_.
_Ichthyosaurus; communis_.
_Ictitherium_.
_Iguana_.
_Iguanodon; Mantelli_.
Ilfracombe Group.
_Illoenus_.
Imperfection of the palaeontological record.
Inferior Oolite.
Infusorial Earth.
_Inoceramus; sulcatus_.
_Insectivora_, of the Eocene; of the Miocene.
Insects, of the Devonian; of the Carboniferous; of the Jurassic;
of the Miocene.
Irish Elk.
_Ischadites_.
Isopod Crustaceans.

Jackson Beds.
Jurassic period; rocks of; life of.

_Kaidacarpum_.
Kainozoic period.
Kangaroo.
Kelloway Rock.
Kent's Cavern, deposits in.
Keuper.
Kimmeridge Clay.
King-crabs.
_Koninckia_.
Koessen Beds.

_Labyrinthodon Joegeri_.
_Labyrinthodontia_; of the Carboniferous; of the Permian;
of the Trias.
Lace-corals.
_Lacertilia_; of the Permian; of the Trias; of the Jurassic;
of the Cretaceous.
_Loelaps_.
_Lamellibranchiata_, of the Cambrian; of the Lower Silurian;
of the Upper Silurian; of the Devonian; of the Carboniferous;
of the Permian; of the Trias; of the Jurassic; of the
Cretaceous; of the Eocene.
_Lamna_.
Lamp-shells (see _Brachiopoda_).
Land-tortoises.
_Lauraceoe_.
Laurentian period; rocks of; Lower Laurentian; Upper Laurentian;
areas occupied by Laurentian rocks; limestones of; iron-ores of;
phosphate of lime of; graphite of; life of.
Leaf-beds of the Isle of Mull.
_Leda; truncata_.
_Leguminosites Marcouanus_.
Lemming.
_Lepadidoe_.
_Lepadocrinus Gebhardi_.
_Leperditia; canadensis_.
_Lepidaster_.
_Lepidechinus_.
_Lepidesthes_.
Lepidodendroids.
_Lepidodendron; Sternberg_.
_Lepidoptera_.
_Lepidosiren_.
_Lepidosteus_.
_Lepidostrobus_.
_Lepidotus_.
_Leptoena; Liassica; sericea_.
_Leptocoelia; plano-convexa_.
Lias.
Lichas.
_Licrophycus Ottawaensis_.
Lignitic Formation of North America.
Lily-encrinite.
_Lima_.
Lime, phosphate of.
Limestone; varieties of; origin of; microscopical struct