REPORT ON THE POLYZOA. 5 



Mr. J. R. Y. Goldstein' has described Alysidium inomata and Hornera subdubia 

 from the Challenger dredgings, but neither are referred to by Mr. Busk. As to the 

 second, it has seemed to me that it may be Hydrocorallina. 



The Chilostomata were described by Mr. Busk in Vol. X. of the Challenger Reports 

 (Zool. Chall. Exp., part xxx., 1884), and the Cyclostomata in Vol. XVII. (Zool. Chall. 

 Exp., part 1., 1886). 



It wiU, of course, be understood that I have had in many cases but small pieces from 

 which to make out the structure, and I am sure that any one undertaking re-examination 

 may still find many new facts in the Challenger collections. 



' Some new species of Bryozoa from the Marion Islands {Trans. Boy. Soc. of Victoria, 1881). 



