Royal Society. 137 



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- 

 loneinas 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 lusi- 

 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 rou.nd the filaments beneath the corium poly- 

 pigerum. / 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. Barboza du Bocage. 



PROCEEDINGS OF LEARNED SOCIETIES. 



ROYAL SOCIETY. 



May 2, 1867. — Lieut.-General Sabine, President, in the Chair. 



"On the Genera Ileterophyllia, Battersbyia, Palceocyclus, and 

 Asterostnilia, 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 Astrseides is so 

 great as to render the classification rather artificial ; but Dr. Duncan's 

 discovery of a genus Asferosmilia, 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 Battersbyia, Milne- 



