CORALS FROM THE PERMIAN FORMATION. 149 



Family STAURIDtE, (p. lxiv.) 

 Genus Polyccelia. 



This genus, the establishment of which was proposed by Professor King some years ago, 

 was characterised by that author in the following terms : 



" A simple Cyathophyllida. Form conical. Walls solid. Primary vertical plates 

 converging to within a short distance of the centre. Secondary vertical plates reaching 

 about half way to the centre. Transverse plates horizontal, at irregular distances from 

 each other, and extending quite across the cavity. Chambers or lamellar interspaces 

 capacious compared with those of other CyathophyllidaB. Reproduction within the 

 polypiferous cup." {King, 'Ann. and Mag. of Nat. Hist.,' Second Series, vol. iii, April, 1849.) 



As we have stated here above, the genus Polyccelia has of late been abandoned by 

 Professor King ; but it appears to us that it ought to be adopted, and in the systematic 

 arrangement of the polypi, published by ourselves in 1851, it has been included in the 

 family of the Stauridse. (See ' Monographic des Polypiers Fossiles des Terrains Pateo- 

 zoiques, Precedee d'un Tableau General de la Classification des Polypes,' p. 162.) 



1. Polyccelia Donatiana. 



Turbinolia Donatiana, King, Cat. of the Org. Rem. of the Perm. Rocks of Northumberland 



and Durham, p. 6, 1848. 

 Calophyllum Donatianum, King, Perm. Foss. of England, p. 23, pi. iii, fig. 1, 1850. 

 Polyccelia Donatiana, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palaeoz., 



p. 317, 1851. 



" Calophyllum vermiform ; gradually enlarging from the base upwards ; transversely 

 wrinkled and longitudinally striated on the outside. Vertical plates dense and somewhat 

 apart from each other; primaries four; secondaries sixteen. Transverse plates horizontal, 

 rather thick, and at irregular distances from each other. Polypiferous cell shallow. 



" The specimen figured, which is the only one of the species known to me, was 

 procured at Humbleton Hill, in the upper bed of shell-limestone." {King, ' Perm. Foss. 

 of England/ loc. cit.) 



2. PoLYCffiLIA PROFUNDA. 



Cyathophyllum profundum, Germer, Verst. des Mansf. Kupfer Schiefers, p. 37, 1840. 



— — Geinits, Neues Jahrb. fur Miner. Geol., 1842, p. 579, tab. x, 



fig. 14. 

 Petraia dentalis, King, Cat. of the Org. Rem. of Perm. Rocks of Northumberland and 



Durham, p. 5, 1848. 

 Cyathophyllum profundum, Geinits, Verst. des Deutsch. Zechst., p. 17, tab. vii, fig. 17, 1848. 



