1886.] GTJPPY JAMAICAN MOLLUSCA. 281 



The Caithness group seems to be a mixture of species from glacial 

 beds of both earlier and later date. 



The high percentage of North American forms in all the groups, 

 biit more especially in the first six, is a feature of much interest. 



February 21, 1866. 



William Henry Corfield, Esq., B.A., Fellow of Pembroke CoUege, 

 Oxford, University CoUege Hospital, Gower Street, W.C. ; Henry 

 Lee, Esq., The Waldrons, Croydon; Henry Skiffington Poole, Esq., 

 B.A., Cape Breton, Nova Scotia; Alexander Ramsay, jun., Esq., 

 45 Norland Square, Notting Hill, W. ; Charles Pearce Serscold, 

 Esq., Taplow HiU, and 24 Oxford Square ; George Suche, Esq., 77 

 Grosvenor Street, W. ; and James Maurice Wilson, Esq., M.A., 

 EeUow of St. John's College, Cambridge, Eugby School, were elected 

 Fellows. 



The following communications were read : — 



1. On the Tertiary Mollusca o/ Jamaica. 

 By E. J. Lechmere Guppt, Esq., Civil Service, Trinidad. 



(Communicated by Henry Woodward, Esq., F.Gr.S., F.Z.S.) 



[Plates XYI.-XVIII.] 



§ 1. The Eelationships oe the Miocene oe Jamaica. 



In 1862 Mr. Lucas Barrett, Director of the Geological Survey of the 

 West Indies, brought over from Jamaica and deposited in the British 

 Museum a collection of Miocene fossils. In 1863 Mr. Carrick Moore 

 communicated to the Geological Society the results of his examina- 

 tion of the shells. Dr. Duncan described the corals, and Prof. Eupert 

 Jones gave an account of the Foraminifera *. In 1864 Dr. Duncan 

 and Mr. Wall gave a sketch of the geology of a part of Jamaica, 

 showing the relations of the Cretaceous and Tertiary formations ex- 

 posed in that island f. In the same communication Dr. Duncan 

 described several new and interesting corals from the Cretaceous, 

 Eocene, and Miocene strata ; but beyond the general results given in 

 Mr. Carrick Moore's paper above referred to, the shells have remained 

 untouched. It was, I believe, the intention of Mr. Barrett to have 

 worked out this portion of the subject, and, indeed, he had already had 

 one plate engraved, which has since been destroyed for want of in- 

 structions ; but as his untimely and lamented death has intervened 

 to prevent our receiving the benefit of his illustration of the fossils 

 alluded to, I have undertaken to furnish an account of these remains J. 



* Quart. Journ. Geol. See, vol xix. p. 510. 

 t Ibid., vol. xxi. p. 1. 



\ The following extract from a letter of Mr. Barrett was published by Dr. 

 Woodward in an obituary notice of that naturalist : " The Tertiary system of 

 VOL. XXII. PART I. X 



