Ornithodesmus, neck bones, 173, 175; coracoid, 109, 116; dorsal vertebræ, 86; remains of _O. latidens_, 173; _O. sagittirostris_, 175 Ornithomorpha, 189 Ornithorhynchus, 40, 53, 95, 117 Ornithosauria, 30, 31, 50, 52, 58, 72, 89, 95, 104, 108, 125, 132, 133, 143, 187, 190, 192, 216 Ornithostoma, 66, 69, 72, 180; lower jaw, 75, 76; pelvis, 98; sternum, 110; phalange, 122; size, 133; skull, 181, 182 Ornithosuchus, 201 Orycteropus, 96 _Ossa innominata_, 93 Ossified ligaments, 150 Ostrich, 23, 45, 49, 113, 129 Owen, Sir R., 31, 36, 46, 48, 110, 117, 143, 172, 176, 180, 231 Owl, 46, 53 Oxford Clay, 33, 156 -- University Museum, 154 Ox, vertebra of, 79; metacarpus, 127 P Palate, bones of, 71 Pangolin, 142 Pappenheim, 32 Parallel groups, 215 Parrot, 71 Patagial membranes, 227 Pelican, 174 Pelvis, 88, 94-98, 151, 195, 202, 204, 206 Penguin, 41, 42, 104, 176 Periophthalmus, 17 Peterborough, bones from, 113, 156 Phalanges, 129, 132; wing finger, 155 Phillips, Professor John, 155 Pigeon, 119 Platydactylus, 21 Platypus, 214 Plesiosaurus, 6, 73, 75, 93, 189 Pleininger, 149, 232 Pneumatic foramina, 45, 83, 88, 132, 209 Pond, Mr., 34 Porcupine, 40 Porpoise, 38, 73, 141, 200 Premaxillary bones, 77, 200, 205 Prepubic bones, 94, 96-98, 194, 204, 205 Protorosauria, 192 _Ptenodracon brevirostris_, 64, 99, 167, 169, 192 Pterodactyle aspects, 35; avian characters, 222; beak, 200; brain, 53; coracoid, 113; discovery, 27, 33; foot, 104; fore limb, 117; history in Germany, 31, 148; hand, 130; hind limb, 100; long tails, 156; palate, 71; sacrum, 89; short tails, 165; size, 35, 133; sacrum, 89; skull, 192; teeth, 73; vertebræ, 80 Pterodactyles from Kansas Chalk, 177, 181 -- from Lias Clay, 135, 147, 152 -- from Neocomian Sand, 176 -- from Oxford Clay, 155 -- from Purbeck beds, 173 -- from Solenhofen Slate, 156, 158 -- from Stonesfield Slate, 153, 158 Pterodactylia, 30, 165, 193, 199 _Pterodactylus antiquus_, 167; _brevirostris_, 99, 167, 169; _crassirostris_, 156; _dubius_, 87, 96, 97, 203; _elegans_, 169; _Fraasii_, 169; _grandipelvis_, 87, 90; _grandis_, 102, 167, 169; _Kochi_, 12, 61, 87, 90, 168, 169; _longirostris_, 28, 90, 96, 101, 103, 105, 167, 169; _micronyx_, 105, 169; _rhamphastinus_, 183; _scolopaciceps_, 105, 166; _spectabilis_, 83; _suevicus_, 169 Pterodermata, 194, 199 Pteroid bone of first digit, 121 Pteromys, 24 Pterosauria, 187, 193 Pterygoid bones, 72, 147 Pythonomorpha, 191 Q Quadrate bone, 12, 68, 77 Quenstedt, 231 R Rabbit, 227 Radius, 119, 120 Redshanks, 22 Relation between head and tail, 157, 193 Reptile, 6, 79, 80 Resin, 136