TERTIARY CORALS. 51 
Section—MADREPORARIA PEHRFORATA. 
Famity—MADREPORID&. 
Genus—M ADREPORA. 
1. Maprepora SonanvERi, Defrance. Plate VIII, figs. 12—14. 
The corallum is arborescent ; the branches are subcylindrical. 
The calices are sunken in the very porous ccenenchyma, 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, seepe 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. Maprepora Rogemert, 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 calicular margin and the conical base 
produce a “ tubuliform calice.” 
The coste are projecting, wavy, rounded, and are lost in a very granular and 
almost echinulate coenenchyma. 
The septa are stout, and twelve in number. 
Locality. Brockenhurst. In the Museum of Practical Geology, London. 
3. Maprepora anciica, Duncan. Pl. VIII, figs. 1—7. 
The corallum is in the shape of a stout trunk, with numerous aborted branches which 
give it a very gibbous appearance. 
1 Op. cit., vol. iii, p. 162. 2 “Toon, Zooph.,’ p. 165. 
