NOTES On THE FOSSIL CORALS OF THE LESSER ANTILLES 
AND PORTO RICO, 
By Thomas Wayl&nd Vaughan. 
Island of St. Bartholomew, W.I. 
For most of our knowledge of the geology of this island we are de~ 
u 
pendent upon the work of Prof. P. T. Cleve. 
1 J On the geology of the northeastern West India Islands, Kongl. Svensk. 
Vetensk. Ak&d. , H&ndl., Bd. IX, No. 12, p. 24* 
The island of St. Bartholomew is composed of eruptive syenite-porphyry 
and rocks, partly consisting of Igneo-sedimentary breccias and conglomer- 
ates, and partly of f o asil if erous limestones. The igneo-sedimentary strata 
of tufas and breccias alternate with beds of the fossil if erous limestone. 
i/ 
Prof. Cleve sayss 
2 J Op. cit . , p, 26. 
"The limestone of St. Bartholomew is a very hard and compact rock with 
a flat, even cleavage. It has a decided tendency to break in parallelopi- 
pedic or cubic pieces, separated by fissures generally containing fins 
crystals of calcareous spar or rock-crystals. Th4at peculiar structure 
often gives the rock, when viewed from a distance, the appearance of ba- 
salt. The limestone sometimes contains numerous fossils, which are gen- 
erally very badly preserved. Among the fossils are numerous echinoderms , 
among which is found a species of Macropneustes and Echinolampas ovum ser- 
pent is Guppy, also found in the St. Fernando beds of Trinidad. I found, 
too, a fine specimen of a decapodus crustacean of the genus Ran ina , of 
thlch there is also one species in Trinidad. The foraminifera are very 
abundant and also many different species of corals. Among the brachiopodous 
mollusca I found one specimen of Argiope and many specimens of a Terebratula . 
resembling^, carnea of the cretaceous formation, or the still living 
T. hyalina . It seems to be the same as T. cameo ides Guppy of the St. Fer- 
nando beds of Trinidad. 
