4d. BRITISH FOSSIL CORALS. 
CHAPTER ITI. 
CORALS OF THE UPPER CHALK. 
Tux fossil Corals found in the Upper Chalk of England are not numerous; they 
belong principally to the section of simple Eusmilinz, and appear to be peculiar to the 
British Fauna. One species, it is true (the Parasmilia centralis), has been mentioned by 
different geologists as existing also in the Chalk of Beauvais and in the north-west of 
Germany, but we have great reason to think that these fossils are not specifically identical. 
It is also worthy of notice, that even no species corresponding to those met with among 
the Corals of the Upper Chalk of England have as yet been seen in the Chalk of Meudon, 
and that a great difference exists between the predominant generical forms in the first of 
these formations, and in the Chalk of Maestricht. In the latter some Cyathinine nearly 
allied to that of England are met with; but the Diploctenium, the Cyclolites, and the 
aggregate Astreide of Maestricht are represented by no corresponding forms in this part of 
the British fossil Fauna, and the organic remains found in these two cretaceous deposits 
have consequently a very different aspect. We must add, that the fossil Corals of the Chalk 
of Faxoe are equally distinct from the British species, and that none of the latter have 
been met with in the Lower Chalk Formations of England. 
Orver ZOANTHARTA (p. ix). 
Family TURBINOLID A (p. xi). 
Tribe CYATHININ A (p. xi). 
Genus CYATHINA (p. X1i). 
CyaTHIna LavicATA. ‘Tab. IX, figs. 1, la, 14, le, 1d. 
CyATHINA LHVIGATA, Milne Edwards and J. Haime, Monogr. des Turbinolides ; Ann. des Sc. 
Nat., 3° série, vol. ix, p. 290, 1848. 
MonocaRya CENTRALIS (pars), Lonsdale, in Dixon’s unpublished work on the Chalk Forma- 
tions and Tertiary Deposits of Sussex, tab. xviii, figs. 12, 12a, 
(perhaps also fig. 5, but not the other figures bearing the 
same name, which are Parasmilia and probably Celosmilia). 
Corallum simple, elongated, adherent, cylindro-turbinate, straight, and in general 
much contracted just above the basis, which is broad. Walls quite smooth, and polished 
