1896.] 



NATURAL SCIENCES OF PHILADELPHIA. 



607 



Micromeryx 507 



Microtus 183-185, 379, 381-383 



Mimodesmus 264 



Mimus 163 



Miscophus 554 



Mniotilta 157, 158 



Molothrus .... 116, 117, 134 



Molybdenite 210 



Monoceras 473 



Monopeltis 467 



Motacilla 123, 126 



Murex 473, 476 



Mus 192, 530-533 



Musca 39 



Mustela 198, 199 



MustelidH' . : 197 



Mutelidas 563 



Mutilla 547-549 



Mutillida> 547 



Mya 227 



Myiarchas 116, 131 



Myoxus 507 



Myxine '. 294, 297 



Myxodesmus 267 



Niesiotus 426, 427 



Napodesmus 265, 267 



Natica 480 



Neotoma 192 



Nesiotes 426 



Nomia 40, 555 



Notogonia 553 



Nycteris 517 



Nycticejus 204 



Nyctisaura 462, 464 



Odynerus 97, 555 



Omphalina 488 



Omphalostyla .... 426, 427 



Onchidella . 398, 399, 405, 455 



Onchidium 403-405 



Opeas 415 



Ophidia 461, 462 



Ophisaurus 465 



Opuntia 396 



Orasema 37 



OreosanrUiS 312 



Oreotragus 519 



Orgyia 12 



Orthotomium 428 



Oryx 519 



Osmotherium 385 



Ostrava 11, 208 



Otocoris . . . Ill, 117, 132, 133 



Otomys 539 



Oxybelus 97, 554 



Oxydesmus 260, 263 



Pachnodus 418 



Pachycheilus 269 



Pachychilus 497 



Pachyglossa 462, 464 



Pachyotus .... 416, 418--423 



Palseolodus 512 



Palseomeryx 507 



Pala3ortyx 514 



Paludina 397 



Panopaea 478 



Panurgus 38--40 



Papillina 474, 475 



Partula 415 



Parus 164 



Passerella 146 



Passerina 116, 139, 151 



Patula 416, 417 



Pecten 470 



Pectinator 542 



Pectis .... 32, 39, 82, 91, 92 



Pedipes . . . 398, 403, 405, 452 



Pelecanus 512 



Pelecostoma 426 



Pelecypoda 500 



Pelodesmus 266 



Pelycictis 390 



Perdita 25--107 



Perido-Steatite 219 



Periploma 471 



Perissodactyla 507 



Perisoreus 132 



Peromyscus . . . 184, 187--191 



Petrochelidon 155 



Phacochoerus 518 



Philanthus 97 



Philomycidse 489 



Philomycus 489 



Phrynosoma 311, 463 



Phyllodactylus 464 



Phymata . 37, 38, 89, 43, 104 



Physa 494 



Physida? 494 



Physignathus 462 



Phthiria 37 



Pinicola 140 



Pipilo 146 



Piranga 113, 115, 116, 124, 152 



Pisidium 500 



Plagiodesmus 264 



