NOTICE. 



The Committee desire to intimate that no copies of these 

 Memoirs will be presented or exchanged, as the prices 

 have been fixed so low that most of the copies will have 

 to be sold to meet the cost of production. 



The Memoirs may be obtained, post free at the nett prices 

 stated, from the Hon. Treasurer, Mr. I. C. Thompson, 53, 

 Croxteth Koad, Liverpool; Prof. Herdman, University 

 College, Liverpool; or the Curator, Biological Station, 

 Port Erin, Isle of Man. 



Memoir I. Ascidia — published in October, 60 pp. and 



five plates, price 1/6. 

 ,, II. Cardium — now ready, 92 pp., six plates and a 



map, price 2/-. 

 ,, III. Echinus — in a few weeks, ... pp. and three 



plates, price 1/-. 

 ,, IV. Codium — January, 1900, price 1/- 



