LECHMERE GUPPY — OLDER ROCKS OF TRINIDAD. 107 
the animal kingdom ; but the generic and even the ordinal 
characters are difficult to make out. There are plates, stems, 
and spines scattered through the stone ; the most perfect 
consisting of five ambulacral plates and four pairs of pores. 
Another specimen, though much broken, shows portions of 
at least twenty ambulacral or pseudo-ambulacral plates, some- 
what resembling the Devonian Eleacrinus. In some of the 
calciferous slates from the same series very similar remains 
occur, but no perfect or nearly perfect specimen has come 
to hand. Some of the fossils appear to be fragments of 
cystidea. 
There is nothing improbable in the association of serpuline, 
molluskan, and ecliinoderm remains with Eozoon. Speaking 
of the Canadian rocks, Dr. Dawson refers to fragments pos- 
sessing appearances highly characteristic of crinoidal remains, 
and mentions that these and other appearances would indi- 
cate that in addition to the debris of Eozoon, other calcare- 
ous structures more like those of crinoids, corals, and shells 
have contributed to the formation of the Laurentian lime- 
stones. 
I give here a list of the fossils I have with more or less 
certainty identified from the calciferous slates and intercalated 
limestones of the mica and clay-slates of the Caribean Group. 
Small as this list may appear, it is a great advance upon 
anything previously published as to the paleontology of 
these rocks. It may be noticed that there is no mollusk in 
the list, nor have I yet seen any fossil from the Caribean 
Group (exclusive of the compact limestone) which I could 
refer with any degree of probability to the sub-kingdom 
molluska. 
