B4 REPORT—1868. 
tiary forms ; and these have a calicular and columellary structure which forms 
them into a subgroup. 
The Eocene species is distantly allied to S. elegans from the Miocene of 
Tortona. ‘The genus is extinct. 
The Balanophyllia, from the Bracklesham beds, is readily distinguished 
from the Crag species by its having no epitheca. This is one of the oldest 
species of the genus, whose species are found also in the Paris Eocene, and 
in the Nummulitic strata of Port-des-Basques. The recent species are 
British, South African, and Pacific (20 to 80 fathoms). 
The new species, Dendrophyllia elegans, nobis, is one of the most beautiful 
corals ever discovered. The elegant branching and gemmation, the graceful 
costal curvature and granulation, and the symmetrical repetition of the septal 
cycles render the coral an object of great interest. Its nearest ally is D. 
gracilis, Kd. & H., of the Chinese seas, a dweller in twenty-five fathoms 
water. The Miocene and Plocene species of the genus are well marked ; 
and the recent species are found in the Mediterranean Sea, in the sea off 
Cadiz and Madeira, and in the Chinese, Pacific, and Australian seas. The 
most vigorous species are from Cadiz and Madeira, Dendrophyllia ramea 
living there in twenty-five to eighty fathoms. 
Stereopsammia is a genus with only one species; and this was determined 
from the study of a very good compound corallum in the Bracklesham beds. 
It is interesting to note that a genus appeared in the Upper Sicilian Ter- 
tiaries (and has many species in the Australian, New-Zealand, and Chinese 
seas, besides some off Panama and in the Pacific coral-sea, &c.) which is 
closely allied to Stereopsammia, for its only distinction is the existence of a 
columella in its species. Both the genera are very erratic members of their 
subfamily, for the peculiar Eupsammian direction of the septa is not noticed 
either in Stereopsammia or in Canopsammia. 
The aporose condition of the lower part of the corallites of Stereopsammia, 
and their perforated calicular ends, taken into consideration with the pecu- 
liarity of the septal direction, prove that the genus links the Hupsammine 
amongst the perforate corals with the Aporosa. 
The genus Dendracis has hitherto been little known. MM. Milne-Edwards 
and Jules Haime described the first species, out of the Madrepora Gervilii of 
Defrance, from the Hauteville beds; but no species was known to be of 
British growth. Whilst examining the Dixon collection in the British Museum, 
I found a species, D. Lonsdalei, nobis. Very recently Reusshas described :— 
D. seriata, Castelgomberto ; D. mammillosa, Castelgomberto; D. Haidingeri, 
Oberburg and Java; and D. nodosa, Oberburg. D’Achiardi has also described 
a species from the Castelgomberto district. 
Lonsdale was correct in his diagnosis of his Porites panicea; and it is a 
most interesting species, for it is a true Porites and a perforate coral. The 
form has its septa less spiculate and more lamellate than is usual in the 
Porites, moreover the ecenenchyma is very decided. This Eocene species has 
thus characteristics of the genera Porites, Astreopora, and Litharea. 
Reuss has described Porites nummulitica, Oberburg ; P. minuta, Castel- 
gomberto ; P. imerassata, Java, tertiary. - This last species is closely allied 
to Porites panicea. 
Some years since, I described a Porites from the Lower (Hippurite) Lime- 
stone of Jamaica. Our knowledge of the genus, therefore, extends from the 
Lower Chalk to the present day. The Miocene forms and the recent are the 
most numerous. <Astrwopora panicea, Ed. & H., must give way to the original 
species, Porites panicea, Lonsdale. The Astrwopore flourished in the Castel- 
