PLATES IN VOL. III. 
Pirate I. Hypnum pyrenaicum.—Dicranum glaucum.—Polytrichum al- 
pinum. 
I]. Isothecium Philippianum. 
III. Southbya tophacea. 
IV. New species of Sargassum. 
oa \ Anatomy of Eolis. 
VII. Structure of Muscular Fibre. 
VIII. Synalissa vulgaris.—Cystocoleus ebeneus.—Coccochloris Brebis- 
. sonii. 
IX. 
X. } New species of Sargassum. 
XI. 
XII. 
eited New species of Excavating Sponges. 
XV. 
XVI. Structure of Vogmarus Islandicus. 
ERRATUM. 
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