THE rrC'ACK.E (W .TAPAX. 1^7 



IIfa'DKK'h ro]>orls! ilie present sj^eeies from tlie lîonin IsImikIs 

 as well as iVoiii Formosa. For the reason given under the head 

 0Ï f^arffassum beriberi folium ;p. lo'")), the occurrence of this species 

 at the ]*>onin Islands seems to me rather douhtfnl. 



Locality. Bonin Islands (Wakburg, Hetdricii). 



Sffrf/asstiiii cinctutii .1. Ag.? 



Plate XVI. Fiiv. lo-lü. 



Spec. Alg. I. p. :V2i.—Id.: Spec. Sarg. Au.str. p. 95 Tab. XXMI. iig. 



III.— Ki'TZ.: Spec. Alg. p. G27.— Dr: Toni: Syll. Alg. III. p. 09. 



'f = Sarcjassum acanthiearpuw (Jkev. Alg. Orient, in Ann. Mag. of Nat. 



Hist. II. p. 432 Tab. XIII. and in Trans. Bot. Soe. Edinb. 



Tall. VIII. 



= Sargassum odontocarpum Sond.: Alg. Trop. Austral, p. 43. No. IG. 



A fragmentary but fertile specimen, cast ashore in Hiuga 

 Prov., exhibited characters of the present species, so far as thej 

 went. As the specimen lacks the lower portion, I am not 

 able to refer it to any of the fornnr which have been described 

 by Grunow^^ under this species. 



Locality. Takamatsu, Hiuga Prov. (!). 



Sarf/ffssum inirropftf/lfum Ac;.? 



Plate XVI. Fig. 17. 



Spec. p. 33.— W.: System, p. 306.— J. A(!.: Spec. Alg. I. ]i. 312.— 7f/.: 

 Spec. Sarg. Austr. p. 99.— Di-: T<.xr: Syll. Alg. HI. ].. 71.— Ykndo: 

 Prelim. List of Fuc. Jap. j). 159. 



"^-Sargassum Gaudiehaudii Mont.: Voy. Bonite, p. 47 Tab. 141.— 

 KÜTZ.: Tab. Phyc. XL Tat: 39. 



'i = Carpacantlms Gaudiehaudii Kutz.: Spec. Alg. ]). G32. 



Remark on the determination. Our plant has much external 

 resemblance to the plant identified with Sargassum heterocystum 



1) In Prcc. Alg. Vettor Pisani, etc. Cf. Dr Toni: Syll. Alg. III. ji. (iO d srrj. 



