PLUMULARIA. 147 



derrated — that illustrate the ' magnalities of Nature/ and 

 take us by surprise, leaving us in wonderment at what may 

 be the great object of this her exuberant production of these 

 ' insect multitudes peopling every wave/ " 



3. Plumularia pennatula, Peather Coralline, G. Iloti- 

 tagu. (Plate YIII. fig. 24.) 



Hab. Coast of Devonshire, Montagu ; on Pinna ingens, 

 Cornwall, rare, Couch ; from a crab, and from Laminaria 

 digitata, Mr. Peach. " Specimens of this rare and beautiful 

 species profusely invest about six inches of the stem of L. 

 digitata, obtained in a fresh state by Miss M. Ball at You- 

 ghall,'' W. Thompson ; Roundstone, Galway, M'Calla. 



A person has only to look at the figure in the plate to 

 see that *' this coralline is as remarkable for the elegance of 

 its form as its likeness to the feather of a pen.'"' Height 

 from three to six inches. I have never seen but one spe- 

 cimen of it, and for that I am indebted to the kindness of 

 Mr. W. Thompson, who received it fi*om Miss Ball. 



4. Plumularia pinnata, Branched Sea Bristles. (Plate 

 YIII. fig. 25.) 



Hab. On shells, stones, and other corallines; deep water. 



The finest specimens of this handsome coralline I have 



ever seen were dredged in Lamlash Bay, attached to Pecten 



