1898.] 



NATURAL SCIENCES OF PHILADELPHIA. 



531 



INDEX TO GENERA, ETC., 

 1898. 



Abies 378 



Abra 419 



Abudefduf 343 



Acalypha 389 



Acanthacese 391 



Acanthochitidse 288 



Accipiter 80, 209 



Acer 21, 297 



Acbatina 190 



Achillea 30, 304 



Acroceridse 161 



Actinella 33 



Actinocyclus .:.... 423 

 Actinoptychus . . . 423, 424 



Actitis 79, 207 



Adiantum 409 



^Egialitis 207 



^Elurus 72 



iEscbninse 148 



Agave 395, 412 



Agelaius 82, 212 



Agrioninse 142, 147 



Agropyron 45, 314 



Aira . 45, 313 



Aix 78 



Alactaga 121 



Alaria 462 



Alcidse 127, 495 



Alismacese 383 



Allionia 39 



Allium 42, 312 



Alnus 41 



Anchura 462, 463 



Amaryllidaceae 395 



Ameiva 103 



Amelanchior .... 24, 299 



Amellus 30 



Ammodramus .... 83, 139 



Aminospermophilus . . . 123 



Amorpha 21, 297 



Ampelis 84 



Amphichsena 58 



Amphicosmia .... 271, 277 



Amphiprora 112 



Amphisbsena .... 103-105 



Amphisbsenidse 103 



Amphispiza 214 



Ampullaria 106 



Anacardiacese 381 



Anachis 419 



Anadenulus 220, 222, 229, 254 



Anadenus 220 



Anagallis 381 



Anaphalantus 162 



Anastoma 283 



Anatidse 137 



Anax 148 



Anemone 16, 17, 293 



Angelica 302, 405 



Anguidpe 103 



Anisolepis 102, 104 



Anisospira 282 



Anoma 279 



Anomia 462 



Anona 410 



Anonacese 410 



Anthericum 397 



Anthomyia 162 



Anthomyidae 162 



Anthrax 158 



Antirrhinum 38 



Antrostomus 81 



Aphallarion 219, 222, 223, 



226, 228, 235 



Aphelocoma 212 



Aplopappus . . . .30,31, 304 



