ON THE BRITISH FOSSIL CORALS, 85 
gomberto deposits. The genera Axopora and Litharwa have been noticed in 
the report on the Brockenhurst corals. The first genus represented the 
Milleporide in the Eocene. 
The five species of Paracyathus from the British Eocene are :— 
Paracyathus crassus, Ed. § H. Paracyathus Haimei, Duncan. 
caryophyllus, Lonsdale, sp, eylindricus, Duncan. 
brevis, Hd. § H. 
P. caryophyllus is found in the Jamaican Eocene, and is closely allied to 
P. cylindricus. P. crassus and P. Haimei are also allied. 
It is doubtful whether the genus should be considered more than a sub- 
genus of the great genus Z’rochocyathus. There are recent species in the 
Mediterranean and in the West Indies. They are found at a depth of from 
fifteen to eighty fathoms. 
M. de Fromentel has described a species of the extraordinary Eocene 
genus Dasmia, from the Neocomian of St. Dizier. The genus stands by 
itself, unless the opinion of MM. Milne-Edwards and Jules Haime be ad- 
mitted to be correct, viz. that each lamina is a septum. To carry this 
opinion further would place the genus amongst the Hupsammide. 
The Oculinide are represented in the British Eocene by two genera and 
four species. 
Oculina conferta, Hd. & H. Oculina Wetherelli, Duncan. 
incrustans, Duncan. Diplohelia papillosa, Ed. & H. 
The three species of Oculina belong to a subdivision of the genus in which 
the calices are distributed without order, the costal strie being rudimentary 
orabsent. Oculina conferta has some analogy with Oculina Halensis, Duncan, 
from the nummulitic limestone of Sindh; but the Sindhian coral has its 
calices arranged in a serial order. The genus flourished in the Miocene and 
Pliocene periods, and is represented in almost every coralliferous sea by 
species living either in tolerably deep water or at a very great depth. 
Diplohelia is an extinct genus, and characterizes Tertiary deposits. There 
is a species, D. raristella, Defrance, sp., in the Eocene of Paris and Biarritz. 
In the corresponding deposits of Lacken there is D. muttistellata, Galeotti, 
sp. The Miocene species from the Sicilian Tertiaries have lately been de- 
scribed by Seguenza ; and D. reflewa, Michelotti, sp., is from Superga. The 
great devolopment of the columella in Diplohelia separates the genus from its 
nearest ally Astrohelia, whose species are Miocene forms from the Faluns and 
from Maryland, The transition between the genera is through Astrohelia Le- 
sueurt, Ed. & H., from the American Walnut-Hill Miocene. This species has 
a small, lax, and spongy columella, and its closest affinity is with the Diplo- 
helia with costal strie. M. Milne-Edwards remarks that Astrohelia (thus 
united with Diplohelia) is a passage from between the Oculinide and the 
Astreide, particularly in relation to the Cladangie, a Miocene genus. The 
affinity between Cladangia and the recent Astrangine is evident. 
The genera Stylocenia and Astrocenia have been removed from the 
Eusmiline to the Astraine in consequence of the discovery that their septa 
are dentate. 
Stylocenia emarciata has an immense geological range. It characterizes 
the Eocene of Jamaica, Sindh, Italy, France, and England. 
S. monticularia is common to the French and British Eocene beds. (See 
remarks on the genus in the report on the fossil corals of the Lias.) 
Astrocenia is a very important secondary genus ; its peculiarities are fully 
discussed in the Report on the Fossil Corals of the Lias. There are three 
species in the Eocene, but only one is British, Reuss has lately described 
