A CARBONIFEROUS FAUNA FROM NOWAJA SEMLJA. 151 



and Thomson's Campophyllum echinatum* but in the latter there are no carinas on 

 the septa, and the tabulae are much flatter. The same distinctions also separate Milne 

 Edwards and Haime's genotype from the new species. A deceptive resemblance to the 

 inner wall of the Devonian genus Craspedophyllum is often seen in transverse sections, 

 owing to the intersection of a tabula against which the septa terminate, or in vertical 

 sections from the intersection of two septal edges within the tabulate area. The great 

 interest of this new species lies in the carinse that cover the septal surfaces. Such a 

 phenomenon is, of course, common in Devonian corals, but is of extreme rarity in 

 Carboniferous species. A low stratigraphical position for the species does not necessarily 

 follow. Cyathaxonia rushiana Vaughan, which seems to be the only Carboniferous 

 coral yet found to have carinse, comes from horizons very high in, or above, the Visean. 

 [An examination of C rushiana shows that the projections on the septa seen in trans- 

 verse sections, to which Dr Vaughan has drawn attention (Quart. Jour. Geol. Soc., 

 1908, p. 460), are in reality carinse.] 



Campophyllum kungurense (Stuckenberg). 



Amplexus Tcungurensis, A. Stuckenberg, "Korallen u. Bryoz. d. Ural u. d. Timan," Mem. Com. 

 Geol. Eussie, vol. x. No. 3 (1895), p. 189 of German text, pi. iii. figs. 10-10c. 



Only one example of this species has been found in the collection, but fortunately 

 the specimen is complete and well preserved. 



All the characters are in perfect agreement with Stuckenberg's figures and descrip- 

 tions, and there is little to add to his diagnosis. The septa become amplexoid at a very 

 early growth-stage, and a vertical section down the calyx confirmed Stuckenberg's 

 observation that in the nature part of the corallum a single row of rather large dissepi- 

 ments appears between the tabulae and the wall. Such a feature is not found in a true 

 Amplexus (e.g. A. coralloides), and the coral may more fitly be placed in the genus 

 Campophyllum. 



Campophyllum kungurense is practically identical with the common spineless form 

 of the Tournaisian coral Campophyllum spinosum (Amplexus spinosus de Kon.). An 

 examination of several specimens of the latter species, procured from Tournai, showed 

 that the septa and dissepiments were somewhat thinner than in C. kungurense, but no 

 other difference was discernible. It is probable that such a distinction is not of specific 

 value, but, pending further investigation, Stuckenberg's name has been retained. His 

 specimens were obtained from the east side of the Urals, presumably from strata of 

 Permo-Carboniferous age ; it seems probable, therefore, that we are dealing with a 

 remarkably stable type, ranging throughout Carboniferous time with but little structural 

 alteration. 



* James Thomson, "A New Family of Rugose Corals," Proc. Phil. Soc. Glasgoiv, 1882, pi. iv. figs. 10, 10a. In 

 his large paper, published by the Society in the succeeding year, the same figures are referred to Campophyllum 

 paracida M'Coy. 



TRANS. ROY. SOC. EDIN., VOL. XLVII. PART I. (NO. 7). 23 



