1853,] MOORE — SAN DOMINGO FOSSILS. 129 



I crossed the Range only on one occasion, and mounted to the 

 summits of different peaks ; they are as bare as sugar-loaves. It 

 would require much time to he spent in these mountains in order to 

 investigate them satisfactorily. 



The foUovsing are the approximative heights (above the sea) of 

 some of the more important localities : — 



Mount Isabella de Torres near Porto Plata 2400 feet. 

 Mount Diego Campo, Monte Christi Range 3500 „ 



Muraso, Monte Christi Range 2800 „ 



Town of Santiago, less than 1000 „ 



Guaraguano 2400 „ 



The Grange 1000 „ 



High Peaks of the Cibao Range 6000 „ 



Notes on the Fossil Mollusca and Fish from San Domingo. 

 By J. C. Moore, Esq., V.P.G.S. 



The rich addition which Colonel Heneken has lately made to the 

 collection of fossils sent over by him in 1848, greatly extends our 

 knowledge of the Tertiary deposits of San Domingo ; and, having been 

 made with great care, and the fossils from different localities having 

 been kept distinct, it enables us to correct one or two inaccuracies in the 

 former Report*. The fossils are to be considered as of three classes : 

 1 st, those from the silt covering the sandstone plain ; 2nd, those of 

 the tufaceous limestone ; and 3rd, those of the green (or blue) shales. 

 The first may at present be dismissed from consideration ; they 

 consist of rolled specimens of the older tertiary fossils, mixed vdth 

 recent shells and corals of West Indian species, imbedded in silt and 

 gravel. It was from these deposits that three of the shells of the 

 former collection were derived, and which were erroneously attributed 

 to the older tertiaries. These shells are Columbella mercatoria, 

 Lucina Pennsylvanica, and Lucina tigerrina. 



2nd. Tufaceous limestone. — The fossils from this deposit are 

 principally Corals, of which there are five species : there are eight 

 species of Mollusca, of which one only {Pleurotoma virgo) has been 

 identified with a living species. The following is the list : — 



Pleurotoma virgo, also found in the green shales. 



Cassis sulcifera, Sowerby, do. 



Venus, one sp. 



Spondylus bifrons, Sowerby, do. 



, new sp. 



Area patricia, Sowerby. 



Ostrea Haitensis, do., do. 



Chama, new sp. 

 3rd. The green shales. — I readily perceived, on examination, that 

 the green shales of Santiago, Nivaje, Postrero, Las Charcas, Cercado, 

 and the black and yellow shales of Angostura were all of one forma- 

 tion, from the great proportion of fossils common to all the locali- 

 ties ; and Colonel Heneken had arrived at the same conclusion, 

 from their stratigraphical position. The fossils consist of the teeth 



* Quart. Journ. Geol. Soc. vol. vi. p. 39 et seg. 



