TEMPORARY PREFACE. ix 



For the best of the coloured drawings from life I am indebted to my late sister, Mrs. 

 Giinther, the loss of whose delicate touch and experience has been greatly felt in the 

 completion of the work. I have also to thank Dr. A. T. Masterman, Rev. J. M. Anderson, 

 my artist— Miss Ada Walker, and Miss Burnet of St. Andrews, for aid in this respect. 

 The present part contains comparatively plain examples of the group, which is remarkable 

 for beauty of coloration in such as the Phyllodocidge, Nereidae, and many others. 



It has been found impossible to represent all the parts required for identification from 

 the living form, because many have not been seen alive, or if so, under circumstances 

 inimical to anything else than preservation. Yet this is not altogether a drawback, since 

 many workers have only spirit-specimens to deal with, and the parts so preserved retain 

 certain useful characteristics. On this head, indeed, diverse views are held, one of the 

 most recent being that of Dr. H. P. Johnson, of California, who asserts that descriptions 

 from life are only advantageous in respect to colour. 



W. C. M. 



G-atty Marine Laboratory, 

 St. Andrews ; 

 July, 



