COKALLIXiE VER^ JAPONlCiE. 23 



genuine Chellosporuiii. Our plant should be taken as an extreme case 

 of this modiUcation. 



It is an inhabitant of the sublittoral reoion, often covering- the 

 whole surface of a reef to the exclusion of other plants. Prov. of 

 Boshû : Prov. of Kazusa : Misaki : Shimoda. 



Corallina, Lamx. 

 1. Corallina yenoshimensis, sp. nov. 



PL II. 21-2-1 : PI. VII. fig. 2. 

 Fronde decumbente, caespitosa, fastigiata, regulariter dichotoma, 

 axillis acutis, ramis suberectis saepe apice subinflatis ; ramulis 

 moniliformibns tenuissimis a basi proliferis : articulis ominibus 

 compressis vel ancipitibus, ramiferis subcuneatis, eramiferis sublinear- 

 ibus, dichotomiis superioribus ultimisque conceptaculiferis ; concep- 

 taculis ovatis. 



The frond is fjistio:iate and reijularlv dichotomous, the terminal 

 portion more or less inflated. Articuli are compressed and measure 

 1.0-1.5 mm. in leno^th, and 0.6-1.0 mm. in width : whole size of 

 frond 2.0-2.5 cm. The terminal articuli as well as the horns are 

 always linear and blunt. The conceptacles are oval or elliptical, 

 slightly bulging out at the end of upper articuli. We find always in 

 this plant some slender moniliform branchlets proliferating from the 

 basal articuli. 



Sublittoral region. Hakodate : Yenoshima (Dr. K. Okamura). 



2. Corallina nipponica, sp. nov. 



PI. II. gg. 20 : PI. \IL tig. 1. 

 Fronde erecta, caespitosa, dichotoma, axillis acutis, ramis erectis ; 



