128 THEUOTAMCAL MAGAZINE.. [Voi.xx1n.JJo.270, 



separated hy certain portion of sterile area : in other words, the 

 earpogonal area never comes in contact with the antheridial 

 area directly. 



Loc. Etorofu Island. 



Canlacauthus rigidulus Kutz ? 



Tab. Phyc. Bd. XVIII. p. 3, Tab. 8. fig. f.-g. 



Since this species has been described by Kutzing as new, 

 no one seems to have referred to or regard it as an independent 

 valid species. In J. Agardii's Epicris Syst. Florid, and in De 

 Toni's Syll. Alg., even the name is wholly neglected. The 

 former algologist seems to have regarded Kutzing's species 

 as a local form as he says: "Kutzing 1. c. (Tab. Phyc. Taf. 8), 

 plnres formas e diversis locis natalibns ut species distinctias 

 delineavit ; quomodo vero dignoscantur haudo video." 



Our plant is found gregareously on rocks at high water 

 marks, forming dense mossy tufts of a dark purplish colour. 

 Frond is small, a few cm. in. length, filiform, cylindrical, 0.2- 

 0.5 mm. in diameter, cartilaginous ; with creeping stems, from 

 which the branches arise upwards. The ramulets start quite 

 irregularly from the basal parts of the stems, but are subpinnate 

 or subsecund in the upper. The ramulets are short, cylindrical, 

 with the spices sharply pointed, often slightly curved ; those 

 with nemathesia are cylindrical and more thickened to form the 

 subspindle-shaped segments. Tetrasporangia, oblong-elliptical, 

 zonately divided with the partition walls convex toward the 

 periphery, limited to a nemathesium in a special ramulet, or 

 often in the whole portion of a minor branch. 



Loc. Hakodate. 



Gelidium linoides Kutz ? 



Tab. Phyc. Bd. XVIII. p. 20, Tab. 58. fig. a-b— Yendo : Econom. 

 Seaweeds of Jap. (in Japanese) p. 1G3. fig. 47. 1903.— Dk Tom; Syll. 

 Alg. IV. p. 159 (nomen). 



