- 158 



on the apex of upper branches and surrounded by " Kurztriebe." Colour 

 rosy- red. Substance membranaceous and the plant imperfectly adheres to 

 paper in drying. 



Hab. : entangled on other algae. Hakodate. Enoshima. 



PL. CLXXXIX. Fig. 1: frond of Antithainnioii Plnmula (Ellis) 

 Thur., \. Fig. 2: portion of frond magd., f. Fig. 3-4: terminal por- 

 tion of frond bearing tetraspores and gland-cells, ; 3, "--, 4 ; R 1 C) -. Fig. 

 5; cystocarpic frond, ^ Fig. 6-8: different portions of one and the 

 same frond showing the mode of branching of laciniae ; 6, middle portion, 

 stem measuring ca. 150 , in thickness; 7-8, lower portion ; 6-7, j 3 -, 8,^-^2. 

 Fig. 9-12: laciniae bearing tetraspores, -^-, -*? -, ^, ^p, resp. Fig. 

 13 : basal portion of frond, -. (Fig. 1, 5-9, and 13 : same specimen 

 from Enoshima col. 10, April, 1921; Fig. 2-4, 10-12: same specimen 

 from the same place col. 6, May, 1900.) 



Chondrococcus Hornemanni (Men.) Schmitz. 



Nom. Jap. : Hosoba-naminohana. 

 PL. CXC, fig.1-14. 



Chondrococcus Hornemanni (Mert.) Schmitz Mar. Florid, v. Dents. 

 Ostafr. (1895) p. 170 ; De Toni Syll. Alg. IV, p. 1674 ; Okam. Synop. 

 H^jiS^is (2nd. ed.) p. \\6.DcsiUi Honiemaniii J. Ag. Sp. 

 Alg. II, p. 641. Desnria coccinea Zanard. Plant Mar. Rubr. p. 55, 

 1. 9. f. 1. 



Fronds coespitose, rising from a small scutate disc, 4-5 times pinna- 

 tely branched in disticho-alternate manner, subflabellately expanded, 

 linear, compressed or a little thickened below, ecostated, 12 cm. 



