tao3.] 99 



Three New Marine Algse from Japan. 



BY 

 K. Yendo, RigahusM, 



CAULERPA TATEYAIVIENSIS, t- "ov. 

 PI. III. Fig. 1-3. 



Frondibus a snrciilo repente ramosiore glabro erectis, simpliciusculis aut 

 parce ramosis, cylindraceis eqiiicrassis diametro 1 mm. laxiiis ramentaceis 

 uonnunquam nudiSj ramentis stipitatis cjlindraceis 3-4 mm. longis 1 mm. 

 latis apice rotundis, inferne distantioribiis subdistichis rachidem nudam 

 sparsim linquentibus, superne pauculis saepe non prseditis. 



This plant has been once sent to me from late Mr. F. Sugiyama for 

 determination, who collected it on the shore at Tateyama in the province 

 of Boshu. The specimen was flagelliform, entirely destitute of ramule ; 

 and has been left in doubt thinking it probably an aberrant form of some 

 species. Last summer, again, he tried another collection there and sent 

 me a specimen. It was identically similar to the former but furnished 

 with pinnate ramules on the branches. The plant undoubtedly stands 

 near by Gaul, sedoides, from which, however, is easily separable by the 

 stipitated cylindrical ramules and the mode of ramuliferation. 



Hab. Tateyama, prov. of Boshu ; by trawling in the water 2-3 fathoms 

 deep (F. Sugiyama). 



HIROIVIP UNDARIOIDES, gen. et sp. nov. 

 PI. 11. fig. 1 and 2 ; PI. III. fig. 4-9. 



Radice fibroso-fasciculata ; stipite brevissimo basi subtereti vel compresso 

 mox ancipiti sursum complanato in costam continuante ; lamina tenui, 

 membranacea, buliato-rugosa, punctata, cryptostomate pra3dita, subpinnatifida, 

 ancitu oblongo-ovata vel cordata, laciniis ovatis seepe lineari-oblongis sinubus 

 laxis plerumque sursum arcuatis obtusis, integris vel passim bifidis, summis 

 denique obliteratis ; lacuna mucifera nulla ; sori et in utrisque marginibus 

 costas longitiidine fimbriati et ia alis stipitis dilatati expansi, collari carnoso- 

 crasso plicis suis stipitem amplectante. 



1 After the local name of the plant. 



