Guppy Reprint 
57 
aos 
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organized beings during the Tertiary period from America 
to the Pacific Ocean through North Africa and South 
Europe. 
Among the collection it will be noticed that there are a 
few shells, e. g. Ttirbo casteneus, Sirombus pngiloides, and 
Plicaiula vexillaia, which like the Conus fuscocmgulatus of 
the European miocene, retain traces of the coloring which 
ornamented them while living. It is only where the .strata 
are of such composition as to be extremely favorable to the 
preservation of molluskan remains that such a circumstance 
could occur. In Jamaica and Haiti the miocene forma- 
tions have been remarkably suited to this end, and hence we 
have from them a series of organic remains scarcel}" sur- 
passed in beautj* even by those of Bordeaux, Dax or Paris. 
In Trinidad the shells of similar age are for the most part 
extremely altered and their characters more or le.ss oblite- 
rated. It is therefore fortunate that we have those of Haiti 
and Jamaica upon which to found and rectify our determi- 
nations of the Trinidad rocks and fossils of like age. 
The list of Jamaica fossil shells is now made as complete 
as the materials in my hands will allow : all the species 
known to me which are well enough preserved to admit 
of identification are described or named either in the 
present paper or in that published in the Journal of the 
Geological Society vol. xxii., pp. 281-295. 
I ought not on the present occasion to pa.ss by without 
notice the very important addition made to the Scientific 
literature of the Westindies by the publication of the 
Geological Report on Jamaica. To Trinidad belongs the 
honor of having initiated the Geological Survey of the 
We.stindies : but the complicated nature of its physical 
structure, and the imperfect condition of the fossils found 
