(h'ohnjn of yi)rtlieader)t West India hlaiids. 19i 



Bnished the examination. Very abundant is the TerebrcUida 

 canieoides, Guppy, also occurring in Trinidad, Another species 

 of brachiopod, Argiope Clevei, Davidson, was also found on 

 St. Bartholomew. The corals are numerous, and have been de- 

 scribed by Mr. P. M. Duncan (Quart. Jour. G. Soc, XXIX, pp. 

 518 — 565). The echinodernis have been described by M. Oot- 

 teau (Description des echinides tertiaires des Isles St. Barthelemy 

 et Anguilla) in K. Sv. Vetenskaps Akademien Handlinger, 

 T. XIII, No. 6, 1875. The foraminifera are very numerous, 

 but have not been examined. Fragments of crabs, Raiiina, oc- 

 cur also in St. Bartholomew. 



As the Eocene strata are inclined, and their strike is generally 

 east and west, there is evidence that the force which pushed the 

 Cretaceous strata into such gigantic folds, was still active after 

 the Eocene time, but not with such great intensity: as before, 

 because the Eocene strata are not more inclined than 20° — 30°, 

 Avhile the Cretaceous in many places are almost vertical. These 

 facts indicate that the rising of the mountain chains in the great 

 Antilles took place in the epoch between the Taronian time and 

 the Miocene. 



Miocene Formation. — Among the small islands of the north- 

 eastern part of the West Indies, the Miocene formation occurs 

 in Anguilla, where it has been deposited on a kind of volcanic 

 amygdaloid rock, visible on the northern- coast. It consists of 

 Imiestone and marls (sometimes very rich in fossils, which gene- 

 rally are in the form of casts), covered by a hard limestone bed, 

 wliich slowly dips down to the south. The same limestone bed 

 occurs in the western point of St. Martin, directly and uncoii- 

 formably deposited on the Eocene formation. 



Miocene beds have also been found in Antigua, Barbadoes 

 and Trinidad. Grande-Terre of Guadeloupe seems to consist 

 principally of Miocene strata. The level land of St. Croix is 

 probably Miocene, but complete evidence of this is still wanting. 



In the large West India islands, Jamaica, Porto Rico, San 

 Domingo and Cuba, the Miocene formation has an enormous 

 development. It consists largely of limestones, generally almost 

 horizontal or very little inclined, — evidence enough that the 

 mountain-chains were comjjleted before the Miocene epoch, 



