Vll. 



first Memoir appeared in October, the second is now pub- 

 lished, the third and fourth will be issued early in 1900, 

 and others will follow, it is hoped, in rapid succession. 

 Memoir I. Ascidia, W. A. Herdman, 60 pp., 5 Pis., Is. 6d. 

 II. Cardium, J. Johnstone, 92 pp , 7 Pis., 2s. 



III. Echinus, H. C. Chadwick, ... pp., 3 Pis., Is. 



IV. Codium, E. J. H. Gibson and Helen Auld. 

 Dendronotus, J. A. Clubb. 

 Peridinian, G. Murray and F. G. Whitting. 

 Zostera, E. J. Harvey Gibson. 

 Himanthalia, C. E. Jones. 



Diatoms, F. E. Weiss. 



Gigartina, 0. V. Darbishire. 



Alcyonium, S. J. Hickson. 



Plaice, F. J. Cole and J. Johnstone. 



Botrylloides, W. A. Herdman. 



Cuttle-Fish, W. E. Hoyle. 



Ostracod, Andrew Scott. 



Patella, J. E. Ainsworth Davis. 



Calanus, I. C. Thompson. 



Actinia, J. A. Clubb. 



Bugula, Laura E. Thornely. 



Calcareous Sponge, E. Hanitsch. 



Porpoise, A. M. Paterson. 



Arenicola, J. H. Ash worth. 



Antedon, H. C. Chadwick. 



Oyster, W. A. Herdman and J. T. Jenkins. 

 As announced in the preface to Ascidia, a donation 

 from Mr. F. H. Gossage of Woolton has met the expense 

 of preparing the plates in illustration of the first few 

 Memoirs, and so has enabled the Committee to commence 

 the publication of the series sooner than would otherwise 

 have been possible. W. A. Herdman. 



University College, Liverpool, 

 December, 1899. 



