GASTEROPODA. 
347 
Lower. 
Middle. 
Upper. 
J 
a 
tr. 
: SPECIES. 
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LOCALITIES. 
REMABES. 
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s 
; - 
MOLLUSCA cont. 
i 
z 
3 
4 
5 
6 
7 
8 
9 
10 
11 
Oasteropodacont. 
Helicina, see Cryptoenia. 
Littorina biornata, Tate 
4 
8 
1 
u 
D. O. Nn. 
circularis, Moore 
2 
1 
Gl. 
7- ovalis, Moore 
2 
1 
Gl. 
semiornata, Miinst. 
2 
? 
1 
1 
S. Gl. Li. T. 
L. ? clathrata, Desh. 
Mathilda Cricki. Hudl. 
10 
H 
Nn. 
Melania, see Chemnitzia 
and Turritella. 
Monodonta humilis, Wils. - 
8 
10 
1 
U 
Le. Li. 
Turbo. 
lindecolina, Wils. 
9 
u 
Li. 
Ataphrus. 
modesta, Tate 
7 
ni 
G. 
- 
Natica Pelops, d'Orb. 
9 
u 
0. 
Nerineea, see Cerithium. 
Neritina arenacea, Terq. - 
2 
1 
Gl. 
canabis, Terq. 
2 
1 
Gl. 
hettangiensis, Terq. - 
2 
1 
Gl. 
- 
Neritopsis cancellata. 
2 
1 
Gl. 
Moore. 
exigua, Terq. 
i 
2 
1 
S. Gl. 
laevis, Stol. 
8. - 
Fissure in Carboni- 
ferous Limestone. 
transversa, Moore 
9 
10 
u 
S. O. Nn. 
Spekei, Moore 
10 
u 
S. 

see also Peltarion. 
Nortoma patroclus, Wilson 
9 
u 
R. - 
Purpurina. 
Ouustus heliacus, d'Orb. 
10 
m 
u 
S. O. Nn. 
O. spinosus, Moore. 
Orthostoma, se Actseonina. 
Paltconiso, see Trochus. 
Patella Beesleyi, Tate 
5 
1 
O. 
Punkeri, Terq. 
2 
1 
Gl. 
gratans, Tate - 
7 
in 
G. 
hettangiensis, Terq. 
2 
1 
Gl. - 
P. suttonensis, Tawn, 
Milligani, Tate 
2 
1 
Gl. 
ornata, Moore 
2 
1 
Gl. 
Sabrina, Tate 
1 
G. 
Schmidti, Dunk. 
2 
1 
G. Gl. 
Peltarion unilobatum, Deal. 
9 
u 
Nn. - 
Operculum of N&ri- 
topsii. 
