262 2'HE BOTANICAL MAGAZINE. [7oi. xxx. N0.355. 



species is so well marked from others, I have but refer our 

 specimens to it provisionally. 



Locality. Owari Prov. (S. Narita, No. Y. IG) ; Mikawa 

 Prov. (!). 



Distribution. Australia. 



Dasya villosa Hary. 



in Loiulon Jotirn. Bot. Ill, p. 433.— Id. : Ner. Aiistr., p. 61, PI. 

 XX.— De Toni: Syll. Alg., IV, p. 1203. 



=Dasra cxtcnsa Sond. : in Kurz.: Tab. Phj'c, XIV, p. 21, Taf. 58. 

 (For other referrences, see: De Toni, 1. c). 



The distinctions between Dasya elegans Ag. and D. villosa 

 Harv. in the cystocarpic or sterile specimens are not very clear 

 even in the type vSpecimens at Dublin and Lund. The simploness 

 of ramification is never characteristic of D. villosa, as many of 

 the authentic specimens of D. villosa are very much ramulose and 

 some of D. elegans quite simple. J. Agardh also observes this 

 and treated on it in Till Alg. System. IV, p. 103. 



The point of distinction hitherto mentioned by the previous 

 authors is on the stichidia. In I), villosa they are ovato-conical 

 and mucronate while in D. elegans they are conical lanceolate; 

 in D. villosa they assume the position of a branch on the mono- 

 siphonous ramulets, while in D. elegans thej' are terminal and 

 have no co-ordinate ramulets b}" them. In these respects our 

 specimens agree satisfactorily with D. villosa IIarv. 



Locality. Rikuzen Prov. (Miss Wainwright, No. 4); Echigo 

 Prov. (R. KOBAYASHI, Xo. 11). 



Distribution. Australia. 



Acrothamnion pulchellum J. Ag. 



Anal. Alg. Cont. I, p. 23, Tab. I, fig. 0-9. 

 = Cnllithamnion pttlclidluw ll\RV.: Phyc. Austr, Synop., No. 092. 

 -De Toni: Syll. Alg., IV, p. 1338. 



I liave a strong doubt about the accessory pinnulct described 

 and ilkistrated by J. Agardii, an important peculiaritj' by which 



