EDITOEIAL NOTES. 



Tins Volume contains Parts LIX., LXI., and LXII. of the Zoological Series 

 of Eeports on the Scientific Eesiilts of the Expedition. 



Part LIX. — The Collection of Monaxonida was in the first instance 

 intrusted to Mr. Stuart 0. Ridley, F.L.S., of the British Museum, for 

 examination and description. 



Mr. Ridley had made very considerable progress in the work when he 

 was compelled, owing to ill health, to inform me that he could not complete 

 the Report within the specified time. In these circumstances I suggested 

 that Mr. Arthur Dendy, B.Sc, F.L.S., should be associated with him in the 

 work, to which proposal Mr. Ridley at once assented. The result has been 

 the present highly satisfactory Memoir on this group of sponges, consisting of 

 about 350 pages, illustrated by 51 lithographic plates, woodcuts, and a map. 



Part LXI. — This Part is a Supplementary Report on the Myzostomida by 

 Dr. L. von Graff, Professor of Zoology in the University of Graz, Austria, and 

 contains descriptions of seven new species, and also references to the litera- 

 ture of the group which has appeared since the publication of the First Part 

 of the Report. It contains sixteen pages and four plates. 



The First Part of Dr. L. von Grafl''s Report forms Part XXVII. of the 

 Zoological Series of Reports. 



Part LXII. — This Report consists of a description by Professor William 

 C, M'Intosh, F.R.S., of Cephalodiscus dodecalophus, one of the most curious 



