DAYID50X — SCOTTISH CAEBO:SIFEROrS BEACHIOPODA. 



471 



mncli aUusion to Scottish species, but lie noT^' and then refers to a 

 few of Ure's figures, and in particnlar to pi. xiv. fig 12, to wMcfi fie 

 applies tfie denoniriiation of Sjjirifer Urii. 



In the " ^Mineral Concfiology " six or seven species or varieties of 

 Scottisli Prodncti were figm^ed and described by James Sowerby and 

 his son, from specimens communicated by tfie late Dr. Fleming ; tfius, 

 Produdiis longispiiuis, P. Flemingii, P. Sjjiiudosa, P. Scoticus, and P. 

 spinosv^s, were pubfisfied in 1814 ; P. lolahis (fi'om AiTan) in 1821 ; 

 P. costoM (from neai^ Glasgow) fii 1827 ; and LepfcBna distorta 1840. 



In a few books and papers we find fists of some Scottisfibracfiiopoda ; 

 but tfiese I fiave found fi^om experience not always to be depended 

 upon. We may, fiowever, notice tfiat, in fiis " Geology of Clydes- 

 dale and AiTan," Dr. Biyce mentions seventeen species found by 

 Professor Ramsay in An^an, and seven in Bute by Mr. Fraser, 



Some of tfie same species fiave been alluded to by Professors 

 M'Coy and MoitIs ; but, witfi tfie exception of tfiose figm^ed by Ure, 

 Sowerby, and myself ('"MonogTapfi of Britisfi Carboniferous Bracfiio- 

 poda"), I am not acquainted witfi any otfier illustrations of our 

 Scottish carboniferous brachiopoda. 



The only other general obseiwation to which we vnH at present 

 refer, is, that Professor de Koninck befieves that he has succeeded in 

 tracrag in the Carboniferous foiTiiations of England and Scotland, 

 two great different faunas ; the one coiTesponding to the carbonifer- 

 ous fauna of Vise and- Bleidberg, the other to the fauna of the 

 Toumay coal-basin (in Belgium). These two faimas, although con- 

 temporaneous, are said to be nowhere found co-existent. After 

 many endeavours to solve tfie enigma by means of dfi-ect strati- 

 grapfiical observations at Vise and at Toumay, tfie distinguisfied 

 Belgian palseontologist does not appear to fiave been able to arrive 

 at any fui'tfier solution tfian tfiat tfie generality of species were dif- 

 ferent in botfi localities. I confess mysefi" unable to discuss tfie 

 matter in question, and must wait for tfie promised development of 

 the author's views ; and I content myself by observing, tfiat tfie 

 species found in tfie Scottisfi carboniferous deposits are attributed 

 by Professor de Koninck to fiis fauna of Vise. 



SCOTTISH CARBOXITEROrS BRACHIOPODA. 



Tazsiily Tekebeatulid^. 



Genus TerelralvM Liliwyd, 1699.* 



As we have afi'eady had occasion to obsein-e, ia our monograph pubfished by 

 the Palgeontographical Society, the species belonging to this genus were not 

 specifically numerous duriiig the Carboniferous period, and, as far as our obser- 

 vations wifi conduct us, ^rere characteiized by the presence of short simple 

 loops, as may be seen in. figuograph fig I. 



* I mnst refer the reader to tlie English, French., and German editions of my "General 

 Introduction" for full particnlaxs relative to the families and genera of Brachiopoda. 



