293 



WEDNESDAY, MAY 28th, 1879. 



The President, the Rev. J. E. Tenison- Woods, F.G-.S. etc., in 

 the Chair. 



DONATIONS. 



Trans, of the Royal Society of Victoria, Vol. lo. 

 Trans, of the Zoological Station at Naples. 

 Trans, of the Royal Society, Tasmania. 



Trans, of the Royal Academy of Natural History, Amsterdam, 

 13 Vols. 



PAPERS PEAD. 



Ox Hetebopsammia Miciielixii, of Edwards and Haime. 



By Rev. J. E. Tenison- Woods, F.G.S., etc. 



Plate XV. 



In the enumeration of the Eupsamminae (first sub-family of 

 Madreporaria perforata) made by Messrs. Edwards and Haime in 

 their Monograph f Ann ales des sciences naturelles to in X. (848,/>. S'.hJ 

 the genus Ileteropsammia occurs. This was created by the authors 

 for the reception of certain peculiar corals which they say are 

 always parasitic upon shells, and which they envelope completely, 

 leaving only a small orifice for the head of the molluscs to which 

 they are subsequently indebted for their locomotion. The corals 

 were described simple, erect, fixed on a univalve shell, which 

 they completely enclose, continuing however to enlarge in the 

 basal portion during their lives. There is no epitheca. There 

 are no costa, but the exterior surface is very finely vermiculate 

 so as to be quite velvet-like in appearance. Columella spongy 

 and well developed. Septa thick, a little exsert, closely pressed 

 together. 



