COELENTEEA— COEALS. 
57 
raramiilia is elongate and cylindrical. Onchotroclms s<tr- 
pcnlinus is as narrow and sinuous as a worm-tube. Other 
forms are discoid, such as Cyclocyatlms Fittoni from the Cfault, 
Trochocyath'us Harvcyanus from the Cambridge Oreeusand, 
and Micrahacia coronula from the Chalk. Gorgonians are 
represented in the Chalk by Axoyaster eretacea. The series 
of corals from the Upper Greensand of Haldon in Devonshire, 
recently enriched by the Vicary Collection, contains many 
specimens described by P. M. Duncan in a IMonograph of the 
Palaeontographical Society. Here may be noticed lialclonia, 
Placos)iii/ia, and excellent specimens of Hdiojwra. The 
Poreign Jurassic and Cretaceous collections chiefly illustrate 
the faunas of Central Europe. 
Among the British Cainozoic corals the Eocene and 
Oligocene fauna is separated from that of Pliocene age. 
Here first appears the family of reef-building Zoantharia 
Perforata, the i’oritida? (Fig. 27 c), of which a Catalogue by 
Fig. 27. — Perforate Zoantliarian corals from the Lutetian of Brackleshani. 
a, Turbinolia Dixoni ; b, Dendrophyllia dendrophylloides ; c, Goniopora 
Websteri. ISTatural size. (From Prestwich’s “ Geology.”) (See Table- 
case 1.) 
H. M. Bernard has been published. Stcjjlianophyllia, Dcn- 
drophyllia (Fig. 27 5), and Balanopliyllia are also I’erforata. 
The adjoining Stylocoenia is an Astraeid. Then come the 
characteristically modern Turbinolidae (Fig. 27 «), and the 
branching Octdina. Alcyonaria are represented by the axis 
of a sea-pen named GrapJmlaria Wcthcrelli, and by the 
gorgonians JVchsteria and Mop-sea, allied to Isis. The 
Pliocene Crags have yielded a few small corals of no great 
interest. The foreign series of Cainozoic corals includes 
representatives of the Indian faunas and many type- 
specimens of si)ecies from the West Indies. 
In illustration of the rock-forming activities of corals 
there is placed in the centre of this Gallery a Case with 
.specimens of the core obtained by a deep boring on the coral 
i.sland of Funafuti, and other specimens .showing the rate of 
growth of various corals. 
Gallery X. 
Table-cases 
1 & 2 . 
Wall-cases 
2 & 3. 
Table-case 
1 . 
Wall-cases 
1 & 2 . 
