1863.] 



MOORE JAMAICAN TEETIARIES. 



511 



have been kindly assisted by Mr. Woodward, Dr. Baird, Mr. Hamilton, 

 and Mr. Lovell Reeve, and now lay the results before the Society. 



Excluding such shells as are too small or too imperfect for 

 determination, the collection contains 71 species, referable to the 

 following genera : — 



SP. 



Cassis 2 



Cassidaria 1 



Strornbus 2 



Malea 1 



Conus 7 



Murex 1 



Triton 1 



Ranella 1 



Oliva 1 



Ancillaria 1 



Mitra 2 



Fasciolaria 1 



SP. 



Turbinella 1 



Fusus 1 



Marginella : 1 



Columbella 2 



Cancellaria 2 



Pleurotoma 7 



Terebra 1 



Phos 2 



Ceritbium 1 



Natica 4 



Turbo 1 



Trocbus 1 



SP. 



Solarium 1 



Cyclostrema 1 



Dentalium 1 



Vermetus 1 



Venus 7 



Lucina 2 



Cardita 1 



Cardium 3 



Corbula 1 



Pectunculus 3 



Area 3 



Chama 2 



tT 



Of these, the following 19 are found in the San Domingo beds, 

 and are not known in a recent state : — 



Conus validus, Sow. 



planiliratus, Sow. 



Murex Domingensis, Sow. 

 Triton simillimus, Sow. 

 Mitra Henekeni, Sow. 



, spec, unnamed. 



Fasciolaria semistriata, Sow. 

 Terebra bipartita, Sow. 

 Phos, spec, unnamed. 



Natica subclausa, Sow. 



, spec, unnamed. 



, spec, unnamed. 



Solarium quadriseriatum, Sow. 

 Turbo, spec, unnamed. 

 Cardita, spec, unnamed. 

 Venus, spec, unnamed. 

 Cardium Haitense, Sow. 

 Corbula, spec, unnamed. 

 Area consobrina, Sow. 



Twelve others have been identified with recent species f inhabiting 

 West Indian seas : — 



Strornbus fragilis. 



Ranella crassa. 

 *Turbinella iufundibulum. 

 *01iva reticularis. 

 *Marginella coniformis. 

 *Natica sulcata. 



*Natica mamillaris. 

 *Venus Papbia. 

 *Lucina Pennsylvanica. 

 *Pectunculus pennaceus. 

 *Arca Noas. 

 *Chama arcinella. 



It thus appears that, of the whole 71 Jamaica shells, 12 are still 

 living, and 28 are common to Jamaican and San Domingo. 



Dr. Duncan, in his Memoir lately read before the Society %, finds the 

 same relations between the Jamaican and San-Domingan beds from a 

 comparison of the Corals, — three of the seven Jamaican Corals being 

 common to both formations, whilst the number of extinct forms 

 justifies the age formerly attributed to the San-Domingan Tertiaries. 

 It will be remembered that the Miocene date was assigned to the 

 latter from the great proportion of extinct species of Mollusca, and 

 also from the presence of four species of Fish, all known in the 

 Miocene beds of Europe and America, and in no newer formation. 

 Here the proportion of extinct Mollusca and Corals is about the same 

 as in the San-Domingan beds ; and the number of fossils common to 



Those marked with an asterisk are also found in San Domingo. + See p. 406. 



