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FROM THE NORTH-WEST AMERICAN COAST. 161 
Plocamium coccineum, Lyngb. 
Rhodymenia palmata, Grev. 
R. Palmetta, Grev. 
Ahnfeldtia plicata, Ag. 
Callophyllis laciniata, Kg. 
*Kallymenia reniformis, 4g. 
Gigartina mamillosa, 4g. 
Halymenia ligulata, 4g. 
*Schizymenia Dubyi, 4g. 
Gloiosiphonia capillaris, Carm. 
Ceramium rubrum, 4g. 
C. diaphanum, 4g. 
C. tenuissimum, 4g. 
*Callithamnion Arbuscula, Lg. 
Callithamnion polyspermum, 4g. 
*C. thujoideum, Ag. 
C. floccosum, 4g. 
* Codium tomentosum, Ag. 
Porphyra vulgaris, 4g. 
Enteromorpha compressa, Lk. 
E. intestinalis, Lk. 
Ulva latissima, 4g. 
U. Linza, L. 
Cladophora arcta, H. 
C. glaucescens, Griff. 
C. letevirens, Kg. 
Hormosira Carmichaélii, Kg. 
The two following are natives of the Mediterranean Sea, but 
not of the British Isles nor of the Atlantic Coasts of Europe :— 
Amphiroa palmata, Kg. 
Ulva fasciata, Del. 
The following 20 are found on the West Coast of South America ; 
those marked with an asterisk are also British :— 
*Desmarestia viridis, Lz. 
Macrocystis pyrifera, Ag. 
*Laminaria saccharina, Ag. 
*Chorda lomentaria, Grev. 
*Ectocarpus siliculosus, Lyngb. 
Polysiphonia dendroidea, Mont. 
*Corallina officinalis, L. 
*Gracilaria confervoides, Grev. 
*Plocamium coccineum, Lyngb. 
Rhodymenia corallina, Bory. 
* Ahnfeldtia plicata, Ag. 
Callophyllis variegata, Kg. 
Gigartina radula, Ag. 
Iridza cordata, Bory. 
*Ceramium rubrum, 4g. 
*C. diaphanum, 4g. 
*Codium tomentosum, 4g. 
*Porphyra vulgaris, 4g. 
*Enteromorpha compressa, 4g. 
*Ulva latissima, Ag. 
The following 20 are common to Australia; those marked with 
an asterisk are also British :— 
* Desmarestia ligulata, Lgb. 
*Carpomitra Cabrerz, Kg. 
Macrocystis pyrifera, Ag. 
*Chorda lomentaria, Grev. 
*Ectocarpus siliculosus, Lgb. 
*Amphiroa corymbosa, La. 
*Corallina officinalis, L. 
*Gracilaria confervoides, Grev. 
*Plocamium coccineum, L9. 
Gigartina radula, Ag. 
*Halymenia ligulata, Ag. 
Ceramium cancellatum, 4g. 
*C. rubrum, 4g. 
«C. diaphanum, 4g. 
*C. tenuissimum, Ag. 
*Codium tomentosum, Ág. 
*Porphyra vulgaris, Ag. 
+Enteromorpha compressa, Ág. 
«Ulva latissima, Ag. 
Ulva rigida, Ag. 
From the foregoing lists it appears, taking Dr. Lyall’s collec- 
tions for a fair specimen of the marine botany of Vancouver’s 
Island, that, 
