SERTULARIA. Lot 
Hab. Cornwall, Mr. Couch; Scarborough, Mr. Bean ; 
Frith of Forth, Jameson; Cork Bay, J. V. Thompson; 
Magilligan Strand, Templeton; Dublin Bay, Hassall; 
rare in Cornwall, plentiful in Devon and Norfolk, C. W. 
Peach; Mersey, Mr. Tudor; Dublin Bay, Dr. Scouler. 
This is a stouter polypidom than the preceding, though 
it does not rise to so great a height; the branches, how- 
ever, are larger and more fan-shaped, bending gracefully as 
if laden with a rich cup of vesicles, arranged in close order 
on the upper side of the branches. ‘The vesicles are oval, 
and smooth. 
This, though exceedingly beautiful also, is rather coarser 
and less elegant in appearance than the preceding, unless 
the specimen be more than usually fine. 
It still remaims undetermined whether they be really two 
distinct species. Lillis thought them distinct species; Mr. 
Hassall points out what he thinks sure marks of distinction. 
J. V. Thompson and Mr. Bean consider them distinct. 
Pallas, and Linneeus after him, regard them as one species. 
Sir J. G. Dalyell, Dr. Fleming, and Dr. Johnston seem to 
have doubts as to their being different species, and we are 
disposed, along with Mr. W. Thompson, to think that they 
run into each other. 
