CARBONIFEROUS BRACHIOPODA. 
255 
Although a small number of Scottish Carboniferous Brachiopoda had been collected, 
<3escribed, and figured between the years 1757 and 1859, by David Ure, Dr. Fleming, 
Sowerby, and others, it was only in 1860 that, in a ' Monograph on the Carboniferous 
Brachiopoda of Scotland,'^ I was able to describe and illustrate some forty-nine 
species and named varieties ; a similar number being likewise recorded in my ' Carb. 
Monograph,' published by the Palseontographical Society during the years 1858 — 63. 
Subsequent to the publication of the works above referred to, Lingida Thomsoni, Dav., 
Discina Craigi, Dav., Athyris pisim, Dav., Spiriferina Etheridgei, Dav., Mhynchonella 
BrocJdei/ensis Dav., Bhynchopora Youngi, Dav., Productus complectens, Etheridge, and 
Prod. Grvffithianus, de Koninck, have been added to the Scottish species already 
catalogued ; and they will be described in the sequel. After a careful re-examination of 
all the species hitherto collected in Scotland, I find that they amount to about fifty-nine 
in number, and of these I append a catalogue, in which the geological horizon and 
some of the principal localities have been noted. 
In 1864, vol. ii of the 'Transactions of the Geological Society of Glasgow,' p. 37, 
Mr. James Thomson published an account and list of the Brachiopoda collected by 
liimself in the Campbeltown district, twenty-one or twenty-two in number. 
In 1871, in vol. iii, part 2, of the 'Transactions of the Geological Society of Glasgow,' 
a valuable catalogue of the Carboniferous Brachiopoda of the West of Scotland, with 
geological position and localities, was drawn up by Mr. James Armstrong ; but no new 
species are recorded. 
In 1872, in his 'Geology of Arran and other Clyde Islands,' p. 225, 4th edition. 
Dr. Bryce mentions twenty-six species of Carboniferous Brachiopoda from Corrie and 
Salt-pans, Glen Shirag, Mauchrie Water ; the beds containing these species being placed 
by Prof. Geikie far down in the Calciferous-Sandstone series (see Section). 
In 1875 Dr. Hunter published a valuable memoir, 'The Palaeontology of the 
Carboniferous Strata of the North- West of Scotland,' in which he gives separate lists 
of the Brachiopoda, arranged in their stratigraphical and geographical divisions. 
In 1876 appeared a most important catalogue of the Western -Scottish fossils, com- 
piled by James Armstrong, John Young, F.G.S., and David Robertson, F.G.S., pages 
48 — 50 being devoted to the Carboniferous Brachiopoda; but no new species were added 
to the list of those already known. 
At my urgent solicitation the Geological Society of Edinburgh formed a Palaeonto- 
logical Committee for the publication of a Catalogue of the Fossils that occur in the 
Lothians and Fife ; and in vol. iii, part 1, p. 71, 1877, of the 'Transactions' of that 
Society, and as a first effort in the right direction, a catalogue of the Silurian and 
Carboniferous Brachiopoda of those Counties was prepared and published by Alexander 
Somervail. 
In 1879 Mr. James Kirkby kindly drew up for my use a MS. catalogue of the species 
^ Published in 'The Geologist,' vol. iii, pp. 14, 99, 179, 219, 235, 258. 
