RHODYMENIACEiE. 165 



plant out of the genus Delesseria. Dr. Harvey, in con- 

 sequence, fell back on the name Wormskioldia, which 

 was published by Sprengel, in 1837; but my friend Mr. 

 Carruthers has pointed out that this name was previously 

 appropriated, in De CandoUe's 'Prodromus,' in 1824, 

 to a genus of flowering plants, and that it is not, there- 

 fore, available. In these circumstances, it occurred to 

 me that this handsome plant would be a fitting monu- 

 ment to dedicate to the memory of Dr. Harvey, and 

 accordingly the name Harveya was inserted in my MS. 

 I subsequently found that Dr. Harvey's labours had 

 been already recognized, and I was therefore prevented 

 the pleasure of offering this tribute of respect and 

 esteem to my kind and distinguished friend. I have 

 sought for some worthy recipient of algological hon- 

 ours, and failing to find a candidate known to fame 

 whose name is not already appropriated, I venture, with 

 all diffidence, to call the genus Maugeria, in honour of 

 Mrs. W. P. Mauger, a very accomphshed and diligent 

 student of British Sea-weeds, to whom I am indebted 

 for much valuable assistance in the preparation of this 

 work, and for the use of many rare, and some almost 

 unique specimens. 



Maugeria sangtiinea. The crimson Maugeria. 



Prond a cylindrical, branched stem, beset throughout its 

 length with numerous, irregalarly-placed leaves ; leaves 

 from a few inches to a foot or more in length, and from half 

 an inch to two or three inches in width, transversely veined, 

 entire at the margin, when young very delicate, and per- 

 fectly flat, becoming a little coarser and more or less torn 

 with age. Fructification, of both kinds, developed during 

 winter on the midribs of old leaves, the membrane of which 



