HILL: GEOLOGY OF JAMAICA. 188 
0. mantelli as that so abundant in the Antiguan flint." He also states! 
that “the Orbitoides are similar to those found fossil in the Upper 
Chalk of Southern France and the Pyrenees, and in the Nummulites 
beds of Scinde.” 
The corals identified by Vaughan are species not hitherto found in 
Jamaica, and constitute a valuable addition to its fauna, inasmuch as 
they fix the Eocene position of these beds beyond doubt. He submits 
he following notes, : 
“The Cambridge beds can be referred to the Eocene (or possibly Oli- 
Eocene) on the strength of their containing abundant specimens of 
"hdraeis, This genus is not known from rocks older than Eocene or 
Younger than Oligocene. Both specimens and species are abundant in 
9uthern Europe and Northern Africa in strata of these ages. 
“The Catadupa beds also appear to be Eocene on the evidence of 
© Trochosmilia, which has a near European relative in 7. acutimargo, 
euss, The Diploria also has a European analogue. Trochoseris is a 
oubtfully Cretaceous genus; it occurs in the Eocene, and there is a 
"cent species, 
. The faunas from the Richmond, Cambridge, and Catadupa beds seem 
Mito different from the St. Bartholomew fauna, described by Duncan. 
Pparently they possess only one species in common, viz. the Stylo- 
“ena, identified by Duncan as emarciata. The stratigraphic affinities 
ü the Jamaican species for European species are the same as those of 
lo 
Col] 
Vision of Duncan’s types from St. Bartholomew.” 
: Concorning the eight species found by Vaughan, he says that “there 
3 not a, strictly Cretaceous form in the collection from Catadupa and 
mbridge, + . + 80 the corals have afforded no evidence tending to prove 
? Cretaceous age of these beds, but it all, so far as it is definite, points 
? an Eocene age." They too occurred in muddy waters, but more 
Macaroon than those of the Richmond epoch, and are accompanied by a 
Arge Molluscan fauna, 
"he two or three genera and species of Echinodermata submitted to 
SASSiZ were reported by him to be Tertiary forms, 
ho mollusca of the Cambridge beds, while few in species, as a rule 
te " bs 
Ae Sufficiently abundant and well preserved to present a distinct faunal 
“pect, F | 
St. Bartholomew corals, and I believe more extensive study and 
“cting will show considerable resemblance, — especially after a re- 
ortunately these have escaped the non-resident species makers, 
10 f . Ñ dad 
have thrown all other Post-Oretaceous Jamaican fossils into tho 
! Quart. Jour, Geol. Soc. London, 1803, Vol. XIX. p. 514. 
