INDEX TO THE GENERA 
A 
Page 
Acteon .. 26 
Actinocamax.. . 32 
Actinocrinites .. — ............ 6 
Alauda . 38 
Alecto .. 5 
Amia . 37 
Ammonites . 33 
Amomocarpum. 4 
Amphidesma .. 10 
Amplexus . 37 
Ampullaria... 25 
Ananckytes .. 7 
Anarhichas. 37 
Anas. 38 
Ancillaria. ..31 
Ancylns .. 23 
Annularia . 4 
Anornia .. 20 
Antelope .. 39 
Apiocrinites ... 6 
Area . 14 
Asaplius . *. 8 
Aspleniopteris. 2 
Astacus . 7 
Astarte . 11 
Asterias .. 6 
Asterophyllites... 4 
Astrea.. 6 
Auricula .... ...... 24 
Avicula . 17 
Axinus... 15 
B 
Baculites ..................... 37 
Bahama .. 38 
Balanus ...................... 9 
Balistes .. 38 
Belemnites.................... 31 
Bellerophon .. 3 ] 
Beloptera .. 32 
Berenicea .. 5 
Bos... 39 
Brachyphyllum... 4 
Buccinum .. 30 
Bucklandia. 4 
Bulimus. 24 
Bulla . 23 
C 
Calamites .. 1 
Calymene .. 8 
Calyptraea. 23 
Oancellaria...28 
Cancer . 7 
Canis .. 39 
Cardita . 13 
Cardium .. 13 
Carpolithus . 4 
Caryophyllea.. e 
Cassis .. 39 
Castor .. 39 
Cellepora . 4 
Cerithium . 28 
Cervus .. 39 
Chaetodon . 37 
Chama .. 15 
Chara .. 2 
Chelonia ...................... 33 
Chiton .. 23 
Choanites. .... 5 
Cidaris .. 7 
Cirrus .. 26 
Clathraria .. 4 
Clavagella .. 9 
Clypeaster .. 7 
Clypeus .. 7 
Cocos . a 
