CORALS FROM THE MOUNTAIN LIMESTONE. 167 



end and forming four cycla ; those of the first three cycla nearly equal, alternating with 

 an equal number of smaller ones, and extending in general to the columella, where they 

 present a small obtuse lobe ; the tertiary ones are inclined towards those of the second 

 cyclum, and become united to them near the centre of the visceral chamber. Height of 

 the coral from 5 to 8 lines ; diameter of the calice 2 lines. A vertical section shows that 

 the interseptal loculi are quite open. 



This fossil has been found at Kendal and at Tournay. A very ill-preserved coral, met 

 with in some part of Yorkshire, also appears to belong to this species. Professor M'Coy 

 mentions its existence in Derbyshire. The only well-preserved British specimens that we 

 have seen belong to the collections of the Cambridge Museum; specimens from Belgium 

 are common in the palseontological collections in Paris. 



In our Monograph of the Corals from the Palaeozoic Formations we have described five 

 other species of Cyathaxonia, which can all be easily distinguished from C. cornu : 

 C. Koninck? by being fixed ; C. cynodon 2 by its walls being armed with rows of spines ; 

 C. tortuosd" and C. profunda? by their septa being more numerous, and by their greater 

 size ; and C. Dalmani 6 by its thick form and its strongly compressed subcristiform 

 columella. 



Family CYATHOPHYLLID^E, (p. lxv.) 



Sub-Family Zaphrentina, (p. lxv.) 



1. Genus Zaphrentis, (p. lxv.) 

 1. Zaphrentis cornucopia. 



Caninia cornucopia, Michelin, Icon. Zooph., p. 256, pi. lix, fig. 5, 1846. Very bad figure. 

 Zaphrentis cornucopia, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz., 



p. 331. pi. v, fig. 4, 1851. 

 Cyathopsis cornucopia ? M'Coy, Brit. Palseoz. Foss., p. 90, 1851. 



Corallum conical, elongated, curved, delicately pedunculated and bearing very slight 

 circular wrinkles. Calice oval and deep. Septal fossula centro-dorsal, elongated. Septa 

 numerous ; thirty -two large ones alternating with an equal number of thinner but well- 

 developed ones ; the former are rather thick at their upper end, but very narrow, and 

 extend to the edge of the septal fossula, on the side of which they are slightly curved, and 

 become united together. Height of the coral one inch, or somewhat more ; great diameter 

 of the calice at least 5 lines ; its depth 4 or 5 lines. 



1 Milne Edwards and Jules Haime, Polyp. Palseoz., p. 321. 2 Op. cit., tab. i, fig. 4. 



3 Michelin, Iconogr., tab. lix, fig. 8. 4 Milne Edwards and Jules Haime, op. cit., p. 323. 



5 MUne Edwards and Jules Haime, op. cit., tab. i, fig. 6. 



