THE HYDROID ZOOPHYTES. 113 



Pluviularia pinnata, Linnaeus. 

 Several very large colonies, from three to four inches in 

 height, all shewing gonothecae well, were dredged at the 

 Isle of Man during August, 1885. 



One colony, shewing gonothecae on the pinnae, as well 

 as in double rows on the stem, was dredged off Port Erin, 

 Isle of Man, from a depth of fifteen fathoms. 



Plumularia setacea, Ellis. 

 Recorded by Byerley as having been found at Bootle and 

 New Brighton. Not common. Mersey (J. S. Hicks). 



Plumularia catharina^ Johnston. 

 Common at the Isle of Man (Hincks). 



Plumularia similis, Hincks. 

 Mentioned by Hincks as being common at the Isle of 

 Man. 



