Royal Society. 127 
I profited by my short residence in Setubal to inquire whether 
there were other specimens of Hyalonema in the possession of 
any inhabitant of that town, and I had the good fortune to find 
one in a good state of preservation, belonging to a proprietor of 
fishing-boats, Antonio Avelino, who generously gave it to me. 
This individual, which brings up to twelve the number of Hya- 
lonemas observed by me, was fished in April of the present year, 
by the padrone Manuel de Souza the younger. 
After this exposition of the facts, the correctness of which I 
guarantee, I hope there will no longer be any pretext for 
doubting the habitat which I have assigned to Hyalonema lust- 
tanicum. 
As to regarding the Hyalonemas as artificial products of the 
industry of the Japanese, this is an hypothesis so destitute of 
proof that it seems to me useless to discuss it here. I will only 
renew the declaration which I have already made to you with 
regard to the cotton thread which Professor Ehrenberg supposes 
to exist twisted round the filaments beneath the corium poly- 
pigerum. J maintain that this supposed thread does not exist 
either in the specimen I have presented to the British Museum, or 
in any of those in the Museum at Lisbon. 
I authorize you to make what use you please of this letter, as 
also of my preceding one. 
Accept, &c., 
J. V. Barsoza pu Bocace. 
PROCEEDINGS OF LEARNED SOCIETIES. 
ROYAL SOCIETY. 
May 2, 1867.—Lieut.-General Sabine, President, in the Chair. 
“On the Genera Heterophyllia, Battersbyia, Paleocyclus, and 
Asterosmilia, and their Position in the Classification of the Sclero- 
_dermic Zoantharia.”” By Dr. P. M. Duncan, Sec. G.S. 
Although the practical and natural classification of the Madre- 
poraria (Sclerodermic Zoantharia) which has been submitted by 
MM. Milne-Edwards and Jules Haime is very generally admitted to 
be the best, still there are great gaps in the succession of the genera, 
and, moreover, some genera cannot be placed. 
The “ break ’’ between the Turbinolides and the Astreeides is so 
great as to render the classification rather artificial ; but Dr. Duncan’s 
discovery of a genus Asterosmilia, comprising several species, unites 
these great divisions. The new genus has the peculiarities of the 
Trochocyathi, but in addition it is furnished with an endotheca. 
The species are described. 
_ The genera Heterophyllia, M°Coy, and Battersby:a, Mailne- 
