1866.] GTTPPY JAMAICAN" MOLLFSCA. 283 



sands, with a calcareous conglomerate, which latter yields the coral 

 alluded to. The Caroni series in Trinidad consists of shales, clays 

 and sands, and some marls, which are characterized by large Ostrece 

 (0. Haitensis, Sow.). In Cuba the formation consists apparently of 

 strata resembling those of Anguilla, in which the shells are found 

 chiefly as casts, most of which have been referred by d'Orbigny to 

 existing species, but which in all probabihty will be found to be iden- 

 tical for the most part with the extinct species found in Jamaica and 

 San Domingo. Tellina hiplicata, Conrad, related to T. ephippium of 

 the Indian seas, and to T. Sohralensis, Sharp, of the Portuguese Ter- 

 tiaries, and Natica pJiasianelloides, d'Orb., the Tellina occurring in 

 the Caroni series in Trinidad, and also in San Domingo, and the Mt- 

 tica in Jamaica, San Domingo, Anguilla, and at San Fernando in 

 Trinidad, are recorded by d'Orbigny from the Cuba beds. The Chert- 

 formation of Antigua has been fully remarked upon by Dr. Duncan*, 

 who correlates it with the Lower Limestone of Malta. The Miocene 

 of Anguilla is a light- coloured marly limestone containing nume- 

 rous moUusca, chiefly as casts. Among the better-preserved shells 

 are Solarium quadriseriatum, Sow., ".nd Natica pJiasianelloides, d'Orb. 

 The Echinoderms in this deposit are in better condition, and exhibit 

 a strong resemblance to those found in the Miocene beds of Malta. 

 Among the species which are specifically identical, we have Sehizaster 

 Scillce, and Cidaris Melitensis, occurring in association with an ex- 

 tinct species of Echinolampas, only to be distinguished critically from 

 E. Jiemisplioiricus, and another almost as near to E. scutiformis. Cly- 

 peaster ellipticus, Michelin, and three living species of Echinoderms 

 also occur in these beds. At San Eernando, in Trinidad, we have a 

 numerous succession of gypseous marls, shales, and some partial lime- 

 stones, enclosing Natica phasianelloides, Orhitoides Mantelli, Num- 

 midina, and Echinolampas ovum-serpentis, as well as some Terehra- 

 tulce. 



It must be understood that while there remains but little doubt 

 as to the very close proximity in age of the Miocene formations of 

 Cumana, Jamaica, and San Domingo, our information is not quite so 

 exact with respect to those of Cuba, Anguilla, and Trinidad, owing 

 to the bad state of preservation of the fossils at the latter localities. 

 And in endeavouring to correlate these beds, I have used the terms 

 Upper and Lower Miocene, not as implying that these formations are 

 respectively equivalent to the Upper and Lower Miocene of Europe, 

 but merely as marking what seems to be the relative antiquity of the 

 Middle Tertiary beds of the Caribean area. 



The connexion between the formations found in all the localities 

 mentioned could only be shown by a general table, including all the 

 known species from those localities. On the present occasion my re- 

 marks must necessarily be confined to the Jamaican fossils. 



As yet I only know of one species common to Jamaica and Cuba 



(Natica pJiasianelloides) and only two common to Jamaica, Anguilla, 



and the Caroni beds in Trinidad. Mr. G. P. Wall, E.G.S., has kindly 



favoured me with a small collection of Tertiary fossils from Cumana, 



^>' Geol. Mag. 1864, vol. i. p. 97. 



x2 



