52 BRITISH FOSSIL CORALS. 
2. Genus C@LOSMILIA (p. XXV.) 
Ca@iosmitiaA LAXA. ‘Tab. VIII, fig. 4, 4@, 46, 4c. 
Corallum simple, turbinate, slightly bent, rather intermittent in its. growth, and 
appearing to have been adherent. Coste distinct from the basis to the calice, very distant 
from each other; those belonging to the first three cycla subcrestiform ; those of the last 
cyclum flat and scarcely visible, delicately granulated and crossed by small horizontal 
stria. Calice circular; fossula narrow and rather deep. No columella. Septa forming 
four complete cycla; but those of the last cyclum almost rudimentary. The six systems 
equally developed. ‘The septa very unequally developed, broad, very exsert; thin, but 
rather less so near the inner margin, presenting a few round granulations on their lateral 
surfaces. Those of the first and second cycla united along the lower part of their inner 
edge. Height, from one inch to one inch and a half; diameter of the calice, seven lines. 
We have given the generic name of Ce/osmilia to a certain number of Eusmilinee which 
we formerly placed in our genus Parasmilia, but which are characterised by the absence 
of the columella and the rudimentary state of the endotheca. Parasmilia poculum, 
P. Fawjasi, and P. punctata’ belong to this group, and differ from C. /aza by their costae 
being flat and granulated near the calice, whereas in the above-described fossil these parts 
are subcrestiform. It is also to be remembered that in Calosmilia poculum and C. Faujasi 
the septa form five complete cycla, and that in the last-mentioned species, as well as in 
C. punctata, the principal septa are much thicker than in C. Java. M. Alcide d’Orbigny 
has lately discovered in the white chalk of Césanne a new species which he designates by 
the name of Celosmilia Edwardsiana, and which differs from C. /axa by its coste being 
rudimentary and its septa thinner. 
1 See our Monograph of the Astreidze (Ann. des Scien. Nat. 3° serie, vol. x). It is possible that our 
Ceelosmilia punctata may be only a young form of C. Fawjasi, but we have not as yet seen a sufficient 
number of specimens to be able to decide the question. 
