CORALS FROM THE MOUNTAIN LIMESTONE. 209 



4. LONSDALEIA DUPLICATA. 



Erismatolithus (Madreporites) duplicatus, W. Martin, Petrif. Derb., pi. xxx, 1809. 



Caryophyllia duplicata, Fleming, Brit. Anim., p. 509, 1828. 



_ _ s. Woodward, Syn. Table of Brit. Org. Foss., p. 5, 1830. 



Cladocora duplicata, Geinitz, Grund. der Verst., p. 570, 1845-6. 



Lonsdaleia? STYLASTRiEAFORMis, M'Coy, Ann. of Nat. Hist., 2d series, vol. iii, p. 461, 



1849. 

 Lonsdaleia crassiconus, M'Coy, Ann. and Mag. of Nat. Hist., 2d series, vol. iii, p. 12, 



1849. 



Lonsdalia crassiconus, Milne Edwards and Jules Haime, Pol. Foss. des Terr. Palseoz., 



p. 461, 1851. 



Lonsdaleia crassiconus, M'Coy, Brit. Palseoz. Foss., p. 103, pi. iii b, fig. 5, 1851. 



Lonsdaleia duplicata, M'Coy, ibid., p. 105. 



Lonsdaleia stylastreiformis, M'Coy, ibid., p. 106, pi. iii b, fig. 7. 



Corallites in general free laterally, and having but slight, circular, mural growth 

 swellings. Septa rather thin, and sub-equal ; 24 or 26 ; exterior zone filled with very 

 large vesicles. Diameter of the Corallites about 1 inch. 



Found at Arnside, Kendal, Bakewell, Derbyshire, (Museum of Cambridge). 



This species differs from L. rugosa x by the small development of the growth swellings 

 of its epitheca; from L. Bronni? by its septa being less numerous, and its columella 

 smaller, and from L. floriformisf and L. papillata, 4, by its septa being almost equally 

 developed, and by the great size of the vesicles of its exterior zone. 



GENERA INCERTtE SEDIS. 

 1. Genus Mortieria, (p. lxxiv.) 



MORTIERIA VERTEBRALIS. 



Mortieria vertebralis, Be Koninck, Anim. Foss. des Terr. Carb. de Belg., p. 12, pi. b, 



fig. 3, 1842. 



— — Michelin, Icon. Zoopb., p. 253, pi. lix, fig. 1, 1846. 



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



p. 467, 1851. 



Corallum short, cylindroid, having the form of a biconcave centrum of the vertebra of 

 some fishes. About 100 septal radii. Diameter two or three inches; height, according 

 to M. de Koninck, varying from 3 lines to 2 inches. 



1 See tab. xxxviii, fig. 5. 2 Milne Edwards and Jules Haime, op. cit., tab. xi, fig. 1. 



3 See tab. xliii, figs. 1, 2. i Milne Edwards and Jules Haime, op. cit., tab. xi, fig. 2. 



