( 20 ) 
No. of 
Species found 
fossil in more than 
one tertiary 
formation. 
PLIOCENE PERIOD. 
GENERA. 
ope 
to 
G 
3 
tics 
<y 
'55 
o 
Species found 
both living and 
fossil (tertiary). 
Habitations of 
living Species. 
Sicily. 
Italy, Subapp. 
| English Crag. 
Various 
Localities. 
Pedipes . . 
3 
7 
buccinea 
Mecliterr, , • • 
Scn.r'-ihfpu'? 
Cyclostoma . 
3 
irabi'ium 
49 
6 
Nice. . . 
Ancylus . . 
4 
3 
• • • ■ • 
Planorbis . . 
23 
26 
rotundatus . 
Temp. Europe. 
marginatus 
Europe. . . . 
ibid 
Tols, Bavari 
* 
ibid.ibid. Cett 
hi 
• • • • . 
• • 9 t • 
spirorbis . 
T7.ni* rinp 
Nice . . . 
ibid 
Quercy . . 
Physa . . . 
9 
1 
Limnea . . 
15 
27 
auricularis 
rivalis . . . 
longiscata 
Europe. . . . 
ibid. . • . . 
ibid. . . . . 
* 
•C 
• s 
* \ 
Lauzerte . 
ibid. . . 
Agen . . 
.. 
Melania . . 
34 
25 
Philippine Isles 
Rissoa . . . 
23 
22 
.. 
Cambessedesii 
new species . 
1 i 
cochlearella 
/ 
f "' * f *| 
Mediterr. . . . 
Lakes of Como 
and Geneva 
Mediterr. . . . 
Indian Ocean . 
• * 
* * 
* f 



Pirena . . . 
3 
2 
Melanopsis . 
10 
11 
buecinoidea 
Asia, Spain, 
Greece 
Alicant . . . 
.A-Sia 
Spain, &c. . . 
I . fi im n (* n 
-t-J cl Y lj c'.LII ■ ■ * 
* 
•if 
Greece . . 
costata 
Greece . . 
if 
n dcnl'll'is 
, • » 
■ , . 
Asia, Greece . 
Abydos. . 
Valvata , . 
4 
1 
Paludina . . 
25 
41 
ibid. > , . . 
* * * ^flu 
• > • • ■ 
