NOTICE. 



IN the present Catalogue it is intended to comprise figures 

 and descriptions of all the species of Marine Polyzoa in the 

 Collection of the British Museum, and from typical speci- 

 mens therein contained. 



This Collection, already valuahle, especially in the posses- 

 sion of Dr. Johnston's specimens, has recently been mate- 

 rially augmented by the addition of numerous Australian 

 and other forms, many of them new, procured by Mr. J. 

 M'Gillivray, on the Voyage of H.M.S. Rattlesnake. It 

 has also been much enriched by the liberality of Charles 

 Darwin, Esq., F.R.S., Dr. J. Hooker, F.R.S., Dr. Lyall, 

 R. M 'Andrew, Esq., F.R.S., J. S. Bowerbank, Esq., F.R.S., 

 the late W. Thompson, Esq., of Belfast, and others, who 

 have placed their Collections at Mr. Busk's disposal, for 

 the purposes of this Catalogue, and for the selection of the 

 specimens required for the Museum Collection. 



The Catalogue has been prepared, and the drawings 

 made, by Mr. GEORGE BUSK, F.R.S., who has also super- 



