FLUSTRA. 355 



a work on fresh-water zoophytes. I did so ; and I had a 

 very friendly letter from him, saying that it was very in- 

 teresting, but that he would like to examine it in a living 

 state before giving his opinion respecting it. In a letter 

 which I lately had from Mr. Wigham, he mentions that he 

 had shown it to Mr. Peach, who said it greatly resembled 

 Mem&ranipora Peachii, which he had found in the dock at 

 Ipswich ; but yet it seemed distinct ; as the one found at 

 Ipswich had three inflected spines on each cell, whereas the 

 Yarmouth one was invariably without spines. 



Corresponding lately with Mr. Busk, of Greenwich, I 

 sent him a specimen of the Yarmouth zoophyte, and he 

 wrote to me that it seemed to be Flustra distans of Mr. 

 Hassall, of which he had a specimen named by our lamented 

 friend Mr. W. Thompson. I have not at hand the volume 

 of the ' Annals of Natural History/ in which it is figured 

 and described by Mr. Hassall. 



12. FLUSTRA HISPID A, Rough Sea-mat. 



Hab. In irregularly-shaped patches on Fucus serratus ; 

 common. 



This, like many other common things, possesses uncom- 

 mon beauty, but as this beauty must be " sought out/' not 

 one in ten thousand ever sees anything remarkable in it. I 



