472 



INDEX. 



Marsupialia, South American, 362 

 Martesia, 10, 755 



argentinensis, 4, 27 



patagonica, 155, IS 6 . *57, 2 S7, 261, 267, 

 272, 273, 277, 279, 282, 292, 295 



peroni, 156, 292 



pumila, 156, 257, 267 

 Matthew, W. D., 334 

 Mayer Basin, 49, 277, 285 

 Medlicott, H. B., 61 

 Meek, F. B., 14, 15 

 Melicerita, 65, 66 



angustiloba, 66, 299, 301 



atlantica, 66 



charlesworthi, 66, 291 



dubia, 66 



triforis, 65, 257, 275, 291, 295, 299,301 

 Mellita, 56 



Mercenaria cancellata, 138 

 Mercerat, A., 287, 288, 444 

 Meretrix, 142, 323 



alta, 304 



crassa, 304 



iheringi, 142, 257, 262, 268, 280 



pseudocrassa, 142, 256, 304 



rostrata, 143, 258, 307, 308 

 Mesonychidae, 336, 337 

 Mesonyx, 335-35 

 Mesozoic, 10, 15 

 Metaepanortlms, 425, 426 



complicatus, 455 



holmbergi, 455 



intermedius, 430 

 Metriodromus, 453 



arenarus, 453 



crassidens, 453 



crassus, 453 



spectans, 453 

 Micraster atacamensis, 62, 63 



valdivianus, 62, 63 

 Microbiotlicridce, 339, 408 

 Microbiotherium, 335, 339, 395, 397, 4.08, 

 450 



conspicuum, 450 



forticulum, 450 



gallegosense, 411, 4.13, 414 



Microbiotherium patagonicum, 409, 4.15 



sp., *409 



tehuelchum, 409, 410, 411, 413, 414 



tortor, 408, 409, 411, 412, 414 

 Milne-Edwards, A., 256 

 Miocene, 34, 287, 288, 295, 296, 297, 299, 

 300, 302, 306, 340 



Lower, 288, 297, 299, 303 

 Mitra, 322 

 Modiola, 121 



ameghinoi, 121, 257, 262, 273, 283,460 



andina, 122, 257, 278, 279, 281 



coquimbana, 122 



laeviuscula, 122 



rugulosa, 122 



Moericke, W., 79, 101, 105, no, 112, 120, 

 146, 189, 193, 194, 198, 212, 223, 224, 

 244, 246, 250, 254, 290, 298, 299, 308 

 Mollusca, Tertiary, So, 444 

 Monophora, 57, 58 



darwini, 57, 76 

 Monotremata, 336, 338 

 Moreno, F. P., 416 

 Morgan, J. P., 207 

 Mt. Leon, 268 



of Observation, 48, 272, 273 

 Multituberculata, 443, 444 

 Murex, 214, 322 



hatcheri, 214, 220, 258, 274, 294, 296 

 Muricidae, 214 

 Murray, J., 319 



Museum, American, of Nat. Hist, 334, 372, 

 387, 401, 411, 415. 42i, 425, 428, 

 430, 432, 436, 437, 444 



British, 334 



La Plata, 408, 410 

 Mytilidae, 120 

 Mytilus, 1 20 



argentinus, 4, 5, 16 



chorus, 120, 257, 258, 262, 266, 275, 

 282, 289, 298, 307, 308, 323 



cuvieri, 8 



magellanicus, 121, 257, 274, 289, 299, 



323 



sp., 277 

 ungulatus, \ 20 



