530 INDEX. 
McConnell, W. R., 358, 426, 441, 474, 478 
Megalneusaurus rex, 79 
Megalosauria, 47 
Meleagris antiquus, 131, 132 
celer, 123 
superbus, 133 
sp. ind., 133 
Menopoma, 19, 51 
allegheniensis, 20 
Merriam, Dr. J. C., 98, 104, 128, 332, 336 
Merrill, Dr. George P., 225 
Merychyus, 174 
Mesodectes, 213 
Mesohippus, 211 
latidens, 220 
Mesoreodon, 139, 179 
Metamynodon, 209 
Metatheria, 47, 48 
Micropterus, 494 
Middle Miocene, 131 
Island Creek, West Virginia, 367 
Miocene, 131 
Middle White River, 210 
Mineral County, West Virginia, 344 
Modiola sp., 79 
Morgan County, West Virginia, 344 
Morosauride, 49, 54 
Morosaurus, 5, 13, 14, 17, 27, 34, 39, 42, 
49 
grandis, 14 
Morrison Beds, 67 
Multituberculates, 208 
Mylagaulide, 179 
Mylagaulids, 172, 181 
Mylagaulus monodon, 179 
Natrix sipedon, 495 
Necturus maculosus, 495, 
New Hagerstown, Ohio, 415 
A New Monotreme-Like Mammal, 204 
New Suilline Remains from the Miocene of 
Nebraska, 305-320 
Niobrara Cretaceous, 296, 300 
Niobrara River, Nebraska, 308 
Nopsca, Baron F., 54, 262 
Notes on Osteology of Baptanodon, 325-33 
Notes on_the Vegetable Tissues in Demonelix, 
190-191 
Oberlin College, Ohio, 355 
Oil Creek, Colorado, 5 
Oligocene, 131 
Ophthalmosaurus, 71, 111, 112, 126, 128, 336, 
337 
cantabrigiensis, 119, 125, 336 
discus, 121 
icenicus, 119, 120, 123, 336 
natans, 120 
Opisthocelia, 47, 48 
Opisthocomus, 131 
Oreodon Beds, 209, 210 
Ornithopoda, 47 
Ornithopsis, 55 
Ornithorhynchus, 208 
Ortalis, 131 
Orthopoda, Cope, 47 
Ortmann, Dr. Arnold E., The Crawfishes of 
the State of Pennsylvania, 343 
Osborn, H. F., 18, 55, 67, 69, 72, 225, 227, 
228, 244, 247, 252, 253, 255 
Osteology of Baptanodon (Marsh), 77-129 
Osteology of Diplodocus Marsh, with Special 
Reference to restoration of Skeleton of Dip- 
lodocus Carnegiei Hatcher, Presented by Mr. 
Andrew Carnegie to the British Museum, 
225-264 
Osteology of Haplocanthosaurus, with Descrip- 
tion of a New Species, and Remarks on the 
Probable Habits of the Sauropoda and the 
Age and Origin of the Atlantosaurus Beds, 
1-72 
Osteology of Protostega, 279-298 
Osteopygis, 294 
Ostrea engelmanni, 79 
Owen, R., 82, 89, 128 
Oxydactylus, 139 
Paleictops, 213 
Paleocheerus, 305 
Paleolagus, 211 
Paleoperdix, 131 
longipes, 132 
