517 



Boltenia . 



Bombyxinus 



Bonellia . 



Bonlia 



Bornella . 



Bornia 



Borsonia 



Borus , . 



Boscia 



Boslryx . 



Botryllacea 



Botrylloides 



Bolryllus 



ßouchardia 



Bourcieria 



Boysia 



Brachiopoda 



Brachychlani 



Brachydonles 



Biachypodella 



Brachypus 



ßracliystoma 



Brachythyris 



Brachyloma . 



Bradybaena 



Branta 



Brephulus 



Briarea 



Brisnaeus 



Brocchia 



Brochus . 



Broderipia 



Brontes . 



Brownia . 



Bryopa 



Bucania . 



Bucardium 



Buccinanops 



Buccinella 



Buccinoides 



Buccinum 



Buchanania 



Buffo . . 



Bufonaria 



Bulbus 



Bulhninus 



.50. 



