Guppy Reprint 



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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. Turbo casteneus, Strombus pugiloides, and 

 Plicatula vexillata, which like the Conus fuscocingulatus 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 scarcely sur- 

 passed in beauty 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 less 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 pass 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 

 Westindies : but the complicated nature of its physical 

 structure, and the imperfect condition of the fossils found 



