TERTIARY CORALS. 51 



Section— MJJDBUT OH JBIJ PEJIFOBATA. 



Pamily— MADREPORID^. 



Genus — ^Madrepora. 



1. Madrepora Solanderi, Befrance. Plate VIII, figs. 12 — 14. 



The corallum is arborescent ; the branches are subcylindrical. 



The calices are sunken in the very porous coenenchyma, and they are large and wide 

 apart. 



This is the description given by MM. Milne-Edwards and J. Haime,^ and the 

 following is from Michelin •? 



M. ramosa, porosa ; ramis subcylindricis, sajpe compressis, raro coalescentibus, granu- 

 losis; stellis universis, rotundis; lamellis 12 fragilissimis, 6 maximis, aliis parvulis. 



The Brockenhurst specimen shows the granulated ccenenchyma and the septa ; but it 

 proves that the calices, like all others of the genus, were more or less prominent before 

 being worn. 



Localities. Brockenhurst. Mary pres Meaux (Seine et Marne), Auvert, Graux, and 

 Valmondois. In the collection of Frederick Edwards, Esq., F.G.S. 



2. Madrepora Roemeri, Duncan. Plate VIII, figs. 8 — 11. 



The corallum is partly foliaceous and partly ramose, but the branches coalesce. 



The calices are very distant and, in unworn portions of the corallum, are on the top 

 of conical and very costulated projections. The caKcular margin and the conical base 

 produce a " tubuliform calice." 



The costse are projecting, wavy, rounded, and are lost in a very granular and 

 almost echinulate ccenenchyma. 



The septa are stout, and twelve in number. 



Locality. Brockenhurst. In the Museum of Practical Geology, London. 



3. Madrepora anglica, Duncan. PI. VIII, figs. 1 — 7. 



The corallum is in the shape of a stout trmik, with numerous aborted branches whicli 

 give it a very gibbous appearance. 



' Op. cit., vol. iii, p. 162. - ' Icon. Zooph.,' p. 16.5. 



