276 THE BOTANICAL MAGAZINE. voi. xxviii. No. m 



Agardh as they are now found in the Herbarium under that 

 species. But I am strongly inclined to think that it requires a 

 further study to prove the identity of these specimens with the 

 the West Indies form. The specimens on which Schmitz's 

 genus Agardhiella is based upon seem to be not from the type 

 locality. 



Rh. robusta J. Ac. are very much succulent while in fresh 

 state. The base of the branches and branchlets is suddenly 

 and much constricted so that all the segments droop down as 

 the plant is brought up above the water. C\'stocarps are 

 limited to the minor branches. Colour, reddish or yellowish 

 purple according to the age of plant. 



Locality. From the Kiushu Island till to the Sagami 

 Bay (!). 



Distribution. Australia, California, Connecticut (?), Long 

 Island (?). 



Champia compressa Hary. 



Ner. Austr. p. 78. PI. XXX. 



I have collected only one specimen in the Idzu Province. 

 It agrees in every respect with the species here mentioned. Very 

 likely, pretty common on the Pacific coast of middle Japan. 



Locality. Idzu Prov (!). 



Distribution. Cape of Good Hope, Ceylon Island, Friendly 

 Islands, New Caledonia, New Holland, 



Polysiphonia senticulosa Hary. 



in J. AdAKDii, Sp. Alg. II. p. 274. 

 This species has been first described by Haryey on the 

 material collected by Dr. Lyall on the Orcas Island. It is 

 very nearly related with P. urceolata Grey, but may be distm- 

 guished from it by having the terminal branchlets short, pin- 

 nate virgate, and generally simple. I have identified my speci- 

 men carefully consulting the originals at Dublin as well as the 

 authentic specimen in the Agardhian Herbarium, Lund. It is 

 to be noted here that a specimen collected by Wood on the 



