532 
Dr. W. n. Harvey’s Account of the Marine Botany of 
Whole number collected. Australian. 
Ser. 1. Mdaiiospermece, . . 42 26 
„ 2. Ehodospermece, . . 270 216 
„ 3. Chlorospermeoe, . . 40 35 
352 277 
<• 
These numbers do not show the whole of the Melamspermece observed ; 
some 15 or 20 species of Sargassum and Cystophora not having been exa- 
mined, and having therefore been omitted from the list. 
Still, the great preponderance of Rhodospernneae is a remarkable feature. 
But the most singular fact is the proportion between the Australian and pelagic 
species of Chlorospermeoe^ a group whose species are, generally speaking, much 
less local than those of either of the other divisions. The comparatively great 
number of Siphoneae in Australia is one reason of this anomaly ; another may 
be, that I have not yet minutely examined the species of Cladophora and Calo- 
thrix. Nevertheless, there is a marked deficiency in W. Australia of the com- 
mon littoral Chlorosperms. 
The Pelagic species, or those which inhabit many very distant places and 
dissimilar climates, are : — 
Chorda lornentaria. 
Dictyota dichotoma. 
Asjjerococcus echinatus. 
Ectocarpus siliculosus. 
Gelidium corneum. 
Plocamium coccineum. 
Spyridia filamentosa. 
Centroceras clavulatum. 
Ceramium rubrum. 
— fastigiatum. 
Gracilaria confervoides. 
Codium tomentosum. 
Ulva latissima. 
Enteromoipha compressa. 
Species showing affinity with the vegetation of the Red Sea and Indian 
Ocean, are : — 
Turhinaria vulgaris. 
Cystoseira prolifera. 
Bictymenia fraxinifolia. 
Leveillia jungermanni- 
oides. 
Dasya Lallemandi. 
Callithamnion thyrsige- 
rum. 
Connecting the W. Australian with the Flora of the South Pacific, are : — 
Dictyota Kunthii ; Rhody^nenia corallina ; Ceramium miniatum. 
The Cape of Good Hope is represented by, — 
Martensia elegans ; Dasya pellucida ; and Halophlegma. 
