South of Italy, and more particularly of Sicily. 209 
Of the 231 Bivalves, ; P 77 
13 Brachiopoda, : P : 7 5, 0.54 
5 Pteropoda, 0 
322 Conchiferous Gasteropoda, 108 i 0.31 
5 Cirrhipeda, : : 2 ,, 0.00 
576 194 or 0.33 
Among the fossil species there are some which do not now 
live in the Mediterranean of Southern Italy, but are known 
to exist in other seas, viz. :— 
Mya truncata, £. Greenland; in the whole Northern Atlantic 
Ocean ; and, according to Brocchi, in Tuscany. 
Lutraria solenoides, Lam. On the coasts of France, &c. 
Tellina crassa, ZL. In the North Sea. 
Lucina columbella, Lam. Senegal. 
pennsylvanica, Z. On the coasts of America. 
Cyprina islandica, ZL. North Sea; Iceland; Canada. 
Cardium hians, Broc. In warm seas; near Algiers. 
Lima bullata, Turton. North Sea. 
Pecten medius, Lam.? Red Sea. 
Ostrea edulis, Z. North Sea. 
Patella vulgata, Z. North Sea. 
Niso Terebellum, Chemn. Nicobar Islands. 
Vermetus intortus, Zam. Antilles. 
Trochus strigosus, Gm. On the Coast of Morocco. 
Fusus contrarius, Z. North Atlantic Ocean. 
Buecinum undatum, L. Do. do. 
Terebra fuscata, Broc. Senegal. 
Dentalium elephantinum, Z. Indian Sea. 
multistriatum, Desh. Indian Sea? 
coarctatum, Lam, English Channel. 
Thus, of 382 species which are common to the Tertiary 
formation and the present period, there are only 20 species 
which do not belong to that portion of the Mediterranean 
Sea which washes Southern Italy! Hence it may be con- 
eluded with great certainty, that at the time of the Ter- 
tiary period, the climate could not have been very differ- 
ent from what it is at present. But perhaps it may be said 
that this conclusion is overturned by the 194 extinct species ; 
and that these species belonged either to the newly-discovered 
ice-period, or toa warm climate? A hasty glance at the list 
already given, is sufficient to shew that neither of these sup- 
positions is correct. It is no doubt true that the occurrence 
VOL, XXXVIII. NO. LXXVI.—APRIL 1845. (a) 
