Crocodile, characters of, 217; heart, 56; lung, 9; shoulder-girdle, 111; skull, 46; vertebræ, 79 Crocodilia, 190 Curlew, 68 Cuvier, 1, 27, 28, 54, 76, 77, 130, 231 Cycnorhamphus, 70, 94, 171, 173, 204 _Cycnorhamphus Fraasii_, 80, 96, 169 -- _suevicus_, 169, 170 Cypselus, 42 D _Dacelo gigantea_, 63 Darwin, 3 Davy, Dr. John, 142 Deuterosaurus, 97 Dicynodon, 200 _Dicynodon lacerticeps_, 71 Digits, of ostrich, 23; of pterodactyle, 128 Digits with claws, 130; foot bones in, 105 Dimorphodon, 63, 64, 66, 67, 73, 74, 83, 90, 102, 113, 143, 192, 194, 199, 201, 206 Dinosauria, 6, 77, 84, 87, 95, 129, 144, 198, 209 Dinosaurs from Lias, 135, 192; from Elgin, 201, 207; Stuttgart, 202; Trias dinosaurs, 199, 200 Diopecephalus, 168 Diving birds, 23, 83, 102 Dolichosauria, 191 Dolphin, 107 Doratorhynchus, 173 Dorygnathus, 74, 148 Dragons, 3, 15, 17 Drumstick bone, 103, 195 Duck, 22, 83 E Echidna, 75, 76, 95, 100 Edentata, 185 Edentulous beak, 153 Eichstädt, 32 Elephant, head of, 46 Enumeration of characters, 223, 225 Ephesus, winged figure, 16 Epiphysis to first phalange, 123 Exocoetus, 18 Extinctions, 129 Eye hole, 144; sclerotic bones in, 65 F Farren, William, 34 Femur, 100 Fibula, 102, 183, 206 Fifth outer digit, 132; in foot, 145 Figure from temple at Ephesus, 16 First phalange, 151 Fish-eating crocodile, 137 Flight, organs of, 17; in bats, 25 Flying limb, 38 Flying fishes, 18, 57; foxes, 26; frogs, 19, 197; gecko, 21, 24; lizards, 20; reptiles, 37, 46; squirrel, 24 Foot, 104; digits in, 105, 146 Fore leg, 102, 206 -- limb, 38, 107, 116, 120 Four claws, 147 Fox, Rev. W., 55, 174 Fraas, Professor Oscar, 172, 231 Frigate bird, vertebræ of, 86, 174 Frog, lungs of, 8 Furculum, 114 G Gaudry, Professor A., 31 Gavial, 136 Gecko, 21, 23 Genera, comparison of, 192 Geological distribution, 186 Gills, 4 Giraffe, 38, 39 Glossy starling, 47 Golden eagle, 120 -- mole, 121 Goldfuss, 30, 231 Granchester, 177 Great ant-eater, 40, 185 Guillemot, 102 Gull, 22 H Haarlem, Teyler Museum at, 32 Habits, probable, 134, 176, 198 Hairless skins, 141 Hand in mammals, 38 Harston, 177 Haslingfield, 177 Hastings, 174 Hatteria lung, 9, 27; brain, 53; skull, 70, 77; ribs, 86; a reptile type, 13 Head, characters of, 76 Heidelberg Museum, 32, 54, 159 Herpetomorpha, 191 Heron, 65, 174 Hesperornis, 76 Hind foot, 104, 135 -- limb, 93, 99, 159, 206 Hip-girdle in whale tribe, 39, 159 Homoeosauria, 191 Horningsea, 177 Horse, metacarpus of, 127; vertebræ of, 79 Humerus, 46, 117, 217 Huxley, Professor, 31, 89, 154, 188 Hyo-mandibular arch, 13 Hypothesis of descent, 226 Hyrax, 101 I