Abretia, 10,16 
Acarda, Brug, : 21 
Acephalia, 14 
Acera, Cuv, 165 
Achatina Lam, 17 | 
Adelobranchia, 17 
Agatina, 93 
nS bonariensis, 93 
ae fuscata, 68 
se variegata, 68 
Agenor, 16 
Alasmidia, 60 
Alasmidonta, 60 
Sf costata, 60 
Me marginata, 60 
Alasmodon, 29, 36, 70, 78,93 | 
e (Decurambis) atropurpureum, 80. 
ee (Sulcularia) badium, 8 
a complanatum, 71 
a (Amblasmodon) hians, 80 
ce (Sulcularia) papyraceum, 81 
is (Lasmigona) ponderosum, 79 
fs re rugosum, 79 
es Seriptum,. 80 
se (Lasmigona) sulcatum, 79 
Me as viridis, 80 
os var. chloris, 80 
< ** fuscata, 80 
ss “ yadiata, 80 
Amathonta, 19 
Amathusia, 19 
Amblasmodon, 78, 80 
Amblema, 29, 48, 57, 72 
a antrosa, 64 
iL ovalis, 29 
Amblemlidia, 54 
Amblotrema, 87 
Ambloxis, 23, 24, 67 
s eburnea, 23 
« ventricosa, 23 
Amesoda, 61 
Amithaon, 18 
Ammonites, Brug, Sil 
Ammonoceratites, Lam, 15 
Amphibulia, 17 
Amphibulimus, Lam, 17 
Amphirea, 16 
Amphrisus, 16 
Ampullaria, 18, 27 
Anatina, Lam, . 19 
Anaulax, Boissy, 19 
Ancilla, Lam, 19 
Ancylidia, 17 
Ancylus, Geof, 17, 24, 27 
Anisoctus, . 94, 95 
4 bicolor, 95, 96 
Et, punctatus, 95, 96 
Anodonta, Brug, 20, 29, 36, 58, 59, 70, 84, 92 
“« - anatina, 59 
Us aperia 92 
fe atra, - 59 
Ms cuneata, 59 
Anodonta cataracta, Say, 
be cygnea, 
S (Lastena) dignota, 
inflata, 
sf “var. fuscata, 
es we “viridis, 
zonalis, 
ch (Lastena) lata, 
marginata, Say, 
pe mutabilis, 
Ue ohiensis, 
var. nigrescens, 
“radiata, 
ce “  violacina, 
at “viridis, 
prelonga Green, 
xe radiata, 
rufa, « 
ce Solenoides, 
undulata, Say, 
Anodontidia, 
Anomia, L, 
Anominia, 
Antepedia, 
Anthiope, 
Anthronacns, 
Apalosia, 
Apleurotis, 
a pectenoides, 
‘ pusilla. 
“ce “ “ 
Aplodon, 
es nodosum, 
Arca, 
Arcaria, 
Arcula, 
Argonauta, Lam, 
Argonautea, 
Argus, Poli, 
Armina, 
“maculata, 
‘*  tigrina, 
Arthemis, Poli, 
Arthromium, 
Arthronotus, 
Ascidia, , 
Asepis, 
Asiphonia, 
Asphalium, 
Atremosia, 
Atromopsis, 
Aulisa, 
Avicula, Lam, 
Aximedia, 
Axinea, Poli 
Baculites, 
Bariosta, 
Belemnita, Lam, 
Belemnites, 
Biphora, Cuy., 
Bivalvia, 
Blephalum, 
Bolina, 
59, 82 
13 
24, 80, 68, 86 
30 
30, 68 
18, 24, 28, 67 
28, 67 
20, 30 
