206 Dr A. Philippi on the Recent and Fossil Mollusca of the 
Truncatella littorina Desh. 
? fusca, Ph, 
atomus, Ph. 
Chemnitzia scalaris, Ph. 
obliquata, Ph. 
+ Nerita versicolor, Lam. 
Natica marochiensis, Lam. 
helicina, Broc.? 
Ianthina bicolor, Mke. 
nitens, Wke. 
patula, Ph. 
Sigaretus haliotideus, L. 
Vermetus semisurrectus, Biv. 
Sealaria pulchella, Bw. 
crenata, L. 
Delphinula exilissima, Ph. 
Solarium discus, Ph. 
Trochus granulatus, Born. 
Cerithium levigatum, Ph. 
Pleurotoma purpureum, Mont. 
costulatum, Riss. 
multilineolatum, Desh. 
pusillum, Seac. 
plicatum, Lam. 
teniatum, Desh. 
Rertrandi, Pay. 
levigatum, Ph. 
secalinum, Ph. 
Lavie, Ph. 
Pyrula squamulata, Ph. 
+ Santangeli, Mar. 
Murex tetrapterus, Bronn. 
Tritonium variegatum, Lam. 
serobiculator, L. 
cutaceum, L. 
Chenopus sirresianus, Mich. 
dubius, Ph. 
pumilio, Ph. 
unidentatus, Ph. 
villicus, Ph. 
leucopheeus, Ph. 
Racketti, Pay. 
pygmeeus, Ph. 
+ carneolus, Lam. 
Turbo neritoides, L. 
littoreus, L. 
obtusatus, L. 
muricatus, L. 
Scissurella plicata, Ph. 
striatula, Ph, 
Cassidaria depressa, Ph. 
Dolium galea, L. 
Buccinum Scacchianum, Ph. 
candidissimum, Ph. 
Tirei, Vas. 
Lefebvrii, Mas. 
Terebra aciculata, Lam. 
Ovula carnea, L. 
+ Cyprea annulus, L. 
+ moneta, Z. 
erosa, DL. 
helvola, Z. 
Dentalium rubescens, Desh. 
CIRRHIPEDA. 
Coronula bissexlobata, Blain. 
Anatifa levis, Brg. 
striata, Brg. 
Pollicipes Scalpellum, L. 
Palanus intermedius, Ph. 
hemispheericus, Brg. 
galeatus, L. 
Acasta Spongites, Poli. 
Chthamalus glaber, Polt. 
Thus, the following mollusca made their appearance in 
the sea subsequently to the Tertiary period :— 
Of the 188 Marine Bivalves, . é «” 53* or 019 
10 Brachiopoda, : : F 4... 0.40 
11 Pteropoda, 7 : 3 6... 0.58 
313 Conchiferous Marine Gasteropoda, 97 ... 0.31 
15 Cirrhipeda, . ; : : 9 ... 0.60 
On the other hand, of 576 fossil species of marine shells, 
the following 193, or almost exactly 3, no longer occur in 
the sea at the present day. 
* In the original 35, evidently a typographical error.—ED. 
