DAVinSON — SCOTTISH CAUnONlFUlJOUS lillACiriOl'ODA. 
471 
much allusion to Scottish species, but ho now nnd then refers to a 
few of Urc's fi<^ures, and in particular to pi. xiv. fig 12, to which ho 
applies the dononiiuation of 8'plrifer Urii. 
In tho " Mineral Conchology " six or seven species or varieties of 
Scottish Producti were figured and described by James Sowerby and 
his son, from specimens communicated by the late Dr. Fleming ; thus, 
Prodiidiis loiujlspinus, F. Fhmhujii, P. spinulosa, P. Saiticns, and P. 
spinosns, were published in 1814 ; P. lobatus (from Arran) in 1821 ; 
P. costata (fi'om near Glasgow) in 1827 ; and Leptaina distorta 1840. 
In a few books and papers we find lists of some Scottish brachiopoda ; 
but these I have found from experience not always to be depended 
upon. We may, however, notice that, in his " Geology of Clydes- 
dale and Arran," Dr. Bryce mentions seventeen species found by 
Professor Ramsay in Arran, and seven in Bute by Mr. Praser. 
Some of the same species have been alluded to by Professors 
M'Coy and Moms ; but, with the exception of those figured by Ure, 
Sowerby, and myself (" Monograph of British Carboniferous Brachio- 
poda"), I am not acquainted with any other illustrations of our 
Scottish carboniferous brachiopoda. 
The only other general observation to which wo will at present 
refer, is, that Professor de Koninck believes that he has succeeded in 
tracing in the Carboniferous formations of England and Scotland, 
two great different faunas ; the one corresponding to the carbonifer- 
ous fauna of Vise and Bleidberg, the other to the fauna of the 
Tournay coal-basin (in Belgium). These two faunas, although con- 
temporaneous, are said to be nowhere found co-existent. After 
many endeavours to solve the enigma by means of direct strati- 
graphical observations at Vise and at Tournay, the distinguished 
Belgian palasontologist does not appear to have been able to arrive 
at any further solution than that the generality of species were dif- 
ferent in both localities. I confess myself unable to discuss the 
matter in question, and must wait for the promised development of 
tlie author's views ; and I content myself by observing, tliat the 
species found in the Scottish carboniferous deposits are attributed 
by Professor de Koninck to his fauna of Vise. 
SCOTTISH CARBONirEROUS BRACHIOPODA. 
Family Teeebkattjlid^. 
Genus Terebrahda LLhwyd, 1699.* 
As we have ahcady had occasion to observe, in oiu: monograph pubUshod by 
the Palscoutograpliical Society, the species belongmff to tliis genus were not 
specifically nmnerous during the Carbouifcrous period, and, as far as our obser- 
vations will conduct us, were characterized by the presence of short simple 
loops, as may be seen in Kguograph fig 1. 
* I must refer the reader to the English, French, and German editions of my " General 
jntroduction" for fiill particulars relative to the families and genera of Bracliiopoda. 
