IG AKT. 3, — K'. y EN DO: 



12. Amphiroa crassissima, sp. nov. 



P]. r. tig. 27-28 : PI. A\ tig. .")-(!. 



Fronde crassissima, iiua basi tereti superne comprsso-coinplaiiata, 

 di-trichotoma, irregulariter pinnatis ; articnlis infcrioribus cylindraceis 

 diametrum œcjuantibus, mediis scutiforinibus vel obtrapezoidibus, 

 superioribus compressis phis miiiiis coytatis, obloiigo-obcordatis vel 

 sagittatis, lobis patentibus ; articulis nltinii.s clavatis ovatisque vel 

 sagittatis ; apice albis, lévite transverse striates ; geniculis inferioribus 

 linearibus superioribus obscuris ; conceptaculis ]jaucis in rn.arginibus 

 articulorum insitis. 



The fronds measure ö-7 cm. liigh spreading Avidely upwards. 

 Jjy the virtues of the thick articuli and the insignificant genicula, the 

 fronds assume a very robust appearance. The terminal articuli are 

 often digitated, and sometimes the lobes of a sagittate articulus 

 are prolonged into lacineated broad wings. The fertile articuli are 

 irregularly cylindrical or sublinear with one or two rows of conical 

 conceptacles. 



Below low tide mark. Misaki : Shimoda : Pr(jv. of l>o.shü. 



13. Amphiroa aberrans, sp. nov. 



PI. II. fig. 1-Ô : IM. V. fig. 1-:;. 



Fronde maxima, ima basi subtereti, su])erne compressa, di- 

 trichotoma ; ramis ramulisque oppositis patentibus ; articulis infimis 

 teretibus, inferioribus compressis scutiformibus, medio elevatis. utrin- 

 que adpressis, mediis superioribusque eramiferis sagittatis plus minus 

 costatis, lobis projectis, articulis ultimis ob(n'atis ; geniculis linearibus ; 



