4 
JOURNAL OF THE GEOLOGICAL SOCIETY OF DUBLIN. 
includes the whole shore from Portmarnock Mar tell o Tower to the 
village ofMalahide, which comprises part of several townlands; but 
these deviations are explained in every case in the detailed descrip¬ 
tion of the locality. 
Where two or three localities are given for a fossil, the first 
name represents the lowest mineral subdivision, and the last name 
refers to the highest in geological sequence. 
Where a fossil was found in several different places, say thirty 
for instance, for want of room in the Table only three of the princi¬ 
pal localities are given; but as, in addition, it was got in twenty-seven 
other localities, this figure is put in the last column, headed, “Other 
Localities.” The object of this is to show the abundance of a parti¬ 
cular fossil in the formation. 
To make the Table more complete for Ireland I have introduced 
into the list made from the Synopsis such fossils of the Carboniferous 
formation as were described by Colonel Portlock, and not found by 
Mr. Griffith’s collectors; also, any described as from Ireland by 
Phillips, Sowerby, Austen, or any other, so far as I know. The 
Table, therefore, contains all the fossils published of this formation. 
The English geologists often give a parish, a county, or Ireland 
as the locality of a fossil; some of those are therefore unsatisfactory 
for my purpose, and not knowing what mineral column to put them 
into, I have therefore omitted to put them in any. 
The whole number of fossils named in the Table is 1050. Of 
these, in the order of time, are first described by— 
Sowerby, in Mineral Conchology, . . 
Phillips, Geology of York,. 
Phillips, Palaeozoic Fossils, . . . 
Fleming, British Animals, . . . . 
Agassiz, Poissons Fossiles, . . . . 
Portlock, in Geological Report, , . . 
M‘Coy, in Synopsis,. 
Austen, in Annals of Natural History, 
Others, a few each,. 
. . 62 
255 ) 
109 ) 364 
. . 9 
. . 46 
. . 80 
. . 442 
. . 27 
. . 20 
Total, 
1050 
The total number of fossils described in the Synopsis by M‘Coy 
is 893, of which 442, or about one half, are new to science, not hav¬ 
ing been described before. 
