ON OELLULARINE AND OTHBE POLTZOA. 293 
On Cellularine and other Polyzoa. By Sir Sidney F. Harmee, K.B.E., 
Sc.D., V.P.R.S., F.L.S., Director of the Natural History Departments 
of the British Museum *. 
(Plates 16-19.) 
[Read 1st February, 1923.] 
I. Introduction. 
The collection of the Polyzoa made by the ' Siboga ' in Malay waters is 
perhaps the most important one which has been obtained in any part of the 
world since the 'Challenger' Expedition, including as it does representatives 
of the shallow and deep water Fauna of a district rich in Polyzoa, but at 
present very imperfectly known. A study of the representatives of this 
group in the area in question is specially needed, in order to fill a conspicuous 
gap in our knowledge. The Polyzoa of parts of Australia have perhaps been 
more fully studied than those of any other part of the world, with the 
exception of the Atlantic and Arctic areas ; particularly those of Victoria 
and New South Wales, thanks to the labours of Busk, Hincks, MacGillivray, 
Waters, and others. Those of Japan have been described, to some extent, by 
Ortmann, and are receiving attention from Yanagi and Okada. Hincks and 
Miss Robertson have described some of the Polyzoa of the Pacific coast of 
North America, but those of the Pacific in general have been very imperfectly 
investigated, although some information on the subject has been given by 
Miss Philipps. Waters has published two important papers on the Polj'zoa 
of the Red Sea and East Africa, and Savigny's admirable figures of Egyptian 
species, some of which were obtained in the Red Sea, as well as a recent 
paper by Marcus on South African species, must be specially noticed. 
Hincks has described Polyzoa from the Indian Ocean, particularly from the 
Mergui Archipelago ; and Miss Thornely and Miss Robertson have also made 
contributions to our knowledge of the Polyzoa of this Ocean. 
In investigating the Cheilostomata of the Malay Archipelago, I have 
found it necessary to devote much attention to various questions which do 
not form a necessary part of the Report which is in preparation. I have 
been obliged in particular to study various genera, in order to attempt to 
decide their characters and the names which ought to be assigned to them. 
* Published by permission of the Trustees of the British Museum. 
LINN. JOURN. ZOOLOGY, VOL. XXZV. 22 
