BE. DICKIE ON AECTIC SPECIES OF ALGite. 239 



ing into a short footstalk. Tlie 



W 



dredged 



Halosaccion ramentaceum^ J. Ag. Not uncommon. Specimens 

 small, not exceeding four inclies, and sparingly branched. 



II. dumontioides^ Harv. First described by Prof. Harvey, from 

 specimens found by Dr. Lyall in lat. 76^^ IS". Mr. Taylor's plants 

 do not exceed four inches in length, Dr. Lyall' s reaching twelve 



or more. 



Ceeamiaceje. 



Ptilota serrata^ Klitz. Eather common. 



Gallithamnion Amerlcannrrij Harv. Abundant on the lower 

 surface of large boulders between tide-marks. Attains three 

 inches in length. Dr. Walker's specimens, growing on (7. mela- 

 gonium, from Port Kennedy, are much smaller. 



O. sparsuniy Harv. Occasionally upon Sphacelaria arctica. 



C. Itothiiy Lyngb. Frequent in the sound, in the form of 

 fleecy tufts two or three inches long. British specimens rary 

 from a line to half an inch ; this contrast as to size is the only 

 respect in which the plant differs from the British form. Pro- 

 fessor Harvey agrees with me as to the identity. 



Series HI. CHLOEOSPEEME^. 



TJliVACEiE. 



TJlva latissima, L. Common. 



Enteromorpha tntestinalis, Link. Frequent, hut very dwarf. 



-27. clatJirataj Grrev. Yarious localities on the shores of the 



gulf. 



JEJ. compressa, Grev. Not unfrequent 

 Tllva latissima^ L. Common. 



Co^'FERTACEjE. 



Cladopliora arcta^ Kutz. Common. 

 C. lanosa, Kiitz. Frequent on other Algse. 

 Ulnzoclonitim riparimn, Kiitz. Kot uncommon on the shores 

 ' Chcetomorplia 7)ielagonivm^ Kutz. Common. 



