Utriculi are club-shaped and elongated, gradually tapering below, 

 subtruncato-rounclish and thin-walled at apex, ca. 3-4 mm. long, 

 540 // broad in average (mostly 564 // broad), 8-9 times as long as 

 broad. Utriculi branch near their bases close to each other. 

 They are distinctly visible to the naked eyes. Colour herbaceous 

 green. Substance is not gelatinous and the plant which has no 

 lustre when dried does not adhere to paper in drying. 



Hab. : On rocks below low tide. Provs. Hyuga, Higo, 

 Shima, Suruga, Idzu, Sagami, Boshyu. 



Setchell and Gardner (Alg. of Northwest. America p. 232) 

 remarks that C. inainillositiii Harv. distributed in my Alg. Jap- 

 Exsic. No. 49 seems to be C. Rittcri Set. et Card. ; but that plant 

 differs from the present plant by having a distinct stipe and also 

 in the shape of utriculi. 



PL. CXXXV, Fig. 10- 1 6. Fig. 10, a-d\ different forms of 

 fronds of Codium mamillosum Harv. in nat. size. Fig. 11 : Irond 

 cut into two, \. Fig. 12 : vertical section of another frond, \. 

 Fig 13 : utriculus (3.6 mm. long, 420 ft- broad) -f. Fig. 14- : 

 another one, 8 times as long as broad, ==, Fig. 15 : rooting ends 

 of filaments, 4 1 -. Fig. 16 : lower portion of an utriculus ; a, connect- 

 ing point of an utriculus branched from the original one ; b t a 

 young utriculus ; c, connecting point with the preceeding utriculus 

 (not represented in the fig.), 4 1 2 . 



Codium inamillosum Harv. 

 ft i & &. 



$ CXXXV IStfi, 10-16 H. 



st - ,j> =. v 7 st w, 5P T&, ffl w TV, t, *3*#c,et*&jRx^fli 



C - * 7 W m V % I'Ti * ' V $ 7 f -y, 



