Dr. Thomas Davidson—Scottish Silurian Brachiopoda. 5) 
I hope shortly to figure the remaining form of Cuttle-fish from 
this interesting locality. 
EXPLANATION OF PLATE I. 
Fie. 1. Dorateuthis Syriaca, H. Woodw., sp. nov., from the Cretaceous of Sahel 
Alma, Lebanon, Beirtit, Syria. ‘Twice the natural size. The original 
preserved in the Geological Department of the British Museum, 
ne: An attempt at an outline restoration of Fig. 1. 
IIl.—On Scortisu Srirurtan BRACHIOPODA. 
By Tuomas Davipson, LL.D., F.R.S. 
qs the volume of the Paleontographical Society for 1888, I conclude 
the series of supplements to my work on British fossil Brachio- 
poda. Additional supplements will, no doubt, be called for every 
now and then. As our rocks continue to be searched, new forms will 
turn up, and specimens will be procured that will enable paleeonto- 
logists to complete the history and illustration of a certain number 
of those I have been compelled to leave insufficiently made out, 
described and illustrated. 
It has always been my desire during the preparation of my 
monograph to do all the justice within my power to the Brachiopoda 
that occur in the fossiliferous rocks of Scotland, and no trouble has 
been spared by many friends in the search for the necessary 
material. 
From all the specimens that have passed through my hands for 
examination during the last thirty-three years, I have been able to 
determine, describe, and illustrate some 4 Recent species; 2 Post- 
Tertiary; 16 Liassic and Oolitic; 59 Carboniferous, and about 184 
Silurian, making a grand total of 216 so-termed species,—a large 
number from a country that had been so long considered as scarcely 
fossiliferous ; and especially so when it is borne in mind that it is 
only from the Jurassic, Carboniferous, and Silurian formations that 
Brachiopoda have been obtained. 
My object, however, in this communication is to mention in as 
few words as possible the results of my study of the Silurian Brach- 
iopoda that have been collected from the following eight Scottish 
counties, namely, Midlothian, Lanarkshire, Peeblesshire, Ayrshire, 
Sutherlandshire, Kirkcudbrightshire, Dumfriesshire, and Berwickshire. 
The Llandeilo, Caradoc, Llandovery, Wenlock, and Ludlow forma- 
tions are well represented in Scotland, and all details in connexion 
with the subject will be found in the pages of the Paleontographical 
Society’s volumes. I would also refer the student for much im- 
portant information to Mr. R. Etheridge jun.’s able opening address 
to the Royal Physical Society of Edinburgh, 1881, “On the Palzo- 
zoic Conchology of Scotland.” In that memoir the author recapitu- 
lates all that has been published with respect to the Carboniferous and 
Silurian Brachiopoda up to the period of the delivery of his address. 
The Silurian rocks of Scotland contain a certain number of species 
that have not been found in England or in Ireland. If we briefly 
consider the general results shown by our table, it will be seen that 
