BEANIA. 369 
are so thin and transparent that the polype can be dis- 
_ cerned through the walls. They have eight tentacula. 
This, though common in many places, does not occur on 
our Ayrshire coast. I have gathered it at Liverpool, and 
at Portrush, Ireland. 
Genus XXV. BEANTA, Johnston. 
Gen. Char. Polypidom confervoid, horny ; the shoots creeping, 
filiform, tubular, irregularly divided ; the cells very large, sessile, 
erect, scattered and solitary, ovate, with a double spinous keel 
on one side. Polypes unknown. 
1. Beanta mrraBitis, W. Bean. (Plate XIX. fig. 75.) 
Hab. On bivalve shells, or on the roots of Cellularia 
avicularis, very rare. Scarborough, Mr. Bean; dredged 
off Scilly, Mr. M‘Andrew ; attacked to a cork, near Fal- 
mouth, W. P. Cocks; Sidmouth, Mrs. Gatty; Exmouth, 
Miss Cutler; Salcombe, Rev. T. Hincks; Peterhead, one 
specimen, Mr. Peach. 
Dr. Johnston says, “ This remarkable genus was dis- 
covered by Mr. William Bean of Scarborough. I felt much 
gratified in associating it with his name. He is well known 
to naturalists generally, by his multitudinous discoveries in 
British zoology, recent and fossil.’ | 
2B 
