INDEX. 
476 
Pholas pat agonic a ,_ 155, 261 
paucispina, 262, 264 
Phou oc dr omits, 422 
gracilis, 457 
patagonicns, 424 
Photinula detecta, 261, 264 
resurrecta, 261, 264 
Phyllonotus, 215, 294, 322 
Pichipilus, 456 
exilis, 456 
osborni, 456 
Pictet, F. J., 11, 16 
Pilsbry, H. A., 50, 79, 161, 164, 198, 211, 
218, 307 
Pinna, 10, 307 
lakesi, 1 7 
robinaldina, 17 
semicostata, 263, 266, 460 
var. magellanica, 263, 264 
sp-, 5* n 
Piso Juliense, 266, 268, 274, 276, 285 
Leonense, 266, 268, 269, 285 
Mesopotamico, 286, 287 
Paranense, 286, 287 
Patagonico, 286, 287 
Santacruzeno, 287 
Subpatagonico, 287 
Suprapatagonico, 266, 268, 269, 284, 
285, 287 
Placenticeras, 37, 38 
Plagiaulacidse, 438, 442, 443 
Plagiaulacoidea, 443 
Plants, 444 
Pleuromya, 10 
latisulcata, 4, 25 
Pleurotoma, 238 
discors, 238, 240, 262, 263 
var. unifascialis , 238, 239, 240 
intorta, 241 
monilis, 239, 294 
subsequalis, 238, 240, 258, 263, 267, 294, 
295, 298 
unifascialis, 239, 258, 262, 267 
Pleurotomaria, Cretaceous, 29 
Jurassic, 29 
quoyana, 29 
Pleurotomaria tardensis, 4, 29 
Pleurotomidae, 238 
Pliocene, 295, 296, 299, 308, 310 
Polyprotodontia, 334, 33.1 
Port Deseado, 49, 275 
Famine, 7 
Gallegos, 49 
Madryn, 4.9, 275 
Portezuelo de Carquenque, 8, 9, 30 
Portunus peruvianas, 255, 256 
Prepanorthus, 455 
lanius, 455 
Pritchard, G. B., 73, 159, 302 
Proborhygena, 407 
Prodidelphys, 451 
acicula, 45 1 
obtusa, 45 1 
pa vita, 45 1 
Prothylacynidce, 339 
Prothylacynus, 334,^0, 342, 343, 344, 345, 
346, 349, 350, 35G 352, 353, 354, 
355, 356, 362, 376, 377, 379, 380, 
381, 382, 383, 384, 385, 396, 398, 
399, 400, 407, 41 1, 446 
brachyrhynchus, 446 
patagonicus, 340, 341, 362,572 
Protoproviverra, 394 
ensidens, 448 
manzaniana, 400 
obasta, 448 
Proviverra, 376 
trouessarti , 386 
Psammobia, 149 
hamiltonensis, 149, 301 
nitida, 149, 292 
patagonica, 149, 257, 261, 267, 272, 
276, 277, 282, 292, 295, 301 
tenera, 149, 292 
Psammobiidae, 149 
Pseudamusium, 13 
Pseudomonotis, 15 
Puerto de Hambre, 186 
Pueyrredon series, 4, 6, 7, 8, 9, 10, 460 
Pugnellus, 10, 33 
manubriatus, 33 
Punta Arenas, 49, 269, 280, 285, 303 ,306 
