INDEX TO GENERA. 



1883. 



Abies 187, 191, 201, 256 



Acarus 45 



Accentor 266 



Accipiter 66 



Acer 74 



Achaenodon 77 



A()rocephalus 266 



Acroloxus 216 



Actinosphaerium 125 



Addox 269 



Aegialites 67 



Agathaumas 99 



Ageloeus 63 



Agonus 2^3 



Agosia 141, 153 



Aix 68 



Akebia 190 



Alburnops. 143 



Alnus 190 



Amblystoma 14, 16, 23, 24, 33 



Amphiuma 177, 178 



Amiurus 132, 133, 161 



AmDicola 171 



Ampelis 62 



Amphitfeptus 313 



Anacharia 107 



Anas 67 



Anchybopsis 144 



Ancylodon 289 



Ancylus 140, 214 



Andrognathus 28 



Anguilla 132, 133 



Amelia 32 



Anisonchus 56 



Anodonta 44, 140 



Anorthura 61 



Antrostomus... 64 



Aphelops 301 



Aphododerus 132 



Apocope 141, 142, 152, 153 



Archibuteo 66 



Ardea 67 



Argiope 278 



Argynnis 36 



Arius 281 



Artimisia 19 



Astacus 165 



Astragalinus 62 



Atax 45, 46 



Attus 276 



Aviculopecten 213 



Bascanium..ll, 12, 17, 18, 19, 21, 



23, 29, 32, 33, 34, 36 



Batrachoseps 28 



Batrachus 291 



Belone 283 



Berberis 112 



Bernicla 67 



Bittium 172 



Blarina 82 



Boa 34 



Bolosaurus 69 



Bonasa 66 



Bos 266, 268 



Botaurus 67 



Bothrops 34 



Brachycybe 27 



Brachyopsis 293 



Breviceps 57 



Bubo 65 



Bufo..l4, 15, 17, 18, 19, 23, 25, 32, 83 



Buteo 66 



Butorides 67 



Callisaurus 35 



Camelus 269 



Camponotus 303 



Canis 83 



Caprimulgus 266 



(369) 



