180 BULLETIN: MUSEUM OF COMPARATIVE ZOÖLOGY. 
I have no hesitation in considering this bed synchronous in age with the 
Montpelier chalk of Jamaica. 
In Cuba foraminiferal white limestones of the Montpelier type have 
wide extent, especially in the western and central portions of the island, 
notably in Havana and Matanzas. 
The Eocene system of Cuba, as described by Castro,! Salterain,? and 
Valentin Peleterro,? undoubtedly includes the equivalents of our Cam- 
bridge and Montpelier beds. Among the characteristic fossils are Orbi- 
toides mantelli and Aturia zigzag, Sow., the latter from La Criolla, near 
Havana, and from the Sierra de Santiago.* According to Salterain, this 
is also the same species as that called Nautilus cubaensis by Lea.’ These 
fossils occur in a white limestone very much like that of the Montpelier 
beds of Jamaica, and have wide occurrence. 
That the Cambridge and Montpelier beds have extensive development 
in Haiti and San Domingo there can be no doubt. This the reader 
can readily ascertain, if, after reading this report, he will peruse the 
descriptive portions of Gabb’s Geology of San Domingo, although 
Gabb does not differentiate the white limestones of the upland or in- 
terior from that of the coast formations, but confuses them together 
under the head of the Coast Limestone, in the very untenable thesis on 
pages 103-112. In numerous places in the descriptive portion of his 
report the upland limestones are described in a männer that leaves no 
doubt not only as to their existence but also their differentiation into 
the several kinds we have described from Jamaica and Cuba. He notes 
in many places the occurrence of Orbitoides, and says, “It has more 
than once proven of great value to me in distinguishing these limestones 
from the overlying Post-Pliocene calcareous beds." Furthermore, on 
page 144 of his report, he speaks of a Nummulite form which is found 
throughout the Dominican “Miocene from the blue shale at its base 
to the top of the series.” In his unpublished manuscript in the Library 
of the United States Geological Survey, entitled ** Additional Notes on 
the Topography and Geology of San Domingo,” he further comments on 
1 Pruebas Paleontologicas, etc. 
2 Apuntes para una Descripcion Fisico Geológica de la Habana y Guanabacoa, 
Madrid, 1880, pp. 30-40. 
3 Apuntes Geológicos referentes al Itinerario de Sagua de Tanamo a Santa Cata- 
lina de Guantanamo. Boletin de la Comision del Mapa Geológica de España, Tomo 
XX. pp. 89-98, Madrid, 1895. 
4 Salterain, loc. eit., p. 87. 
5 Trans. Am. Phil. Soc., 2d Series, Vol. VIL, Plate X. Fig. 15. 
5 Page 96. 
