1878.] 55 [Crosby. 
pores. Another specimen, though much broken, shows portions of 
at least twenty ambulacral or pseudo-ambulacral plates, somewhat 
resembling the Devonian Eleacrinus. In some of the calciferous 
slates from the same series, very similar remains occur, but no per- 
fect or nearly perfect specimen has come to hand. Some of the fos- 
sils appear to be fragments of Cystidea.’’ 
While studying these rocks, I have frequently remarked the strong 
likeness which the “ Caribbean Group” as a whole presents to the 
Taconian series of western Massachusetts and of the eastern United 
States generally. This agreement holds not only with respect to the 
lithological characters, as the preceding descriptions testify, but it is 
seen also in the monoclinal dips, the extensive dislocations parallel 
with the strike, and the general, but not entire, absence of organic 
remains. If what has been said of the age of the compact limestone 
be substantially correct, then in its relations to the lower Paleozoic 
formations, too, the “ Caribbean Group” admits of correlation with 
the Taconian. 
A vote of thanks was passed to Dr. J. W. Dawson, of 
Montreal, for some fine specimens of Hozoon canadense. 
General Meeting. Oct. 16, 1878. 
Vice-President, Mr. 8. H. Se in the chair. Twenty- 
eight persons present. 
Prof. N. 8. Shaler read a paper on the peculiarities in the 
growth of the Swamp Cyprus ( Zaxodium distichum). 
Mr. C. 8. Minot referred to some recent speculations on 
the homology of the endostyle of the Tunicates and the 
thyroid gland of the Vertebrates. 
Dr. T. M. Brewer showed some additions to the collection 
of birds—a pair each of the American Scoter Duck and 
the Surf Duck, the gift of B.C. Clarke, Esq., and specimens 
of the Pomarine Skua, Leach’s Petrel, and the Red Pha- 
lerope from the Smithsonian Institution. 
The thanks of the Society were voted for both gifts. 
