14 ART. 3— K. YEN DO: 



9. Amphiroa misakiensis, sp. nov. 



1*1. T. fig. 24-25 : pi. Vr. fig. 1. 



Fronde ima ])[isi tereti, superiie complanata, di-trichot.orna ; raniis 

 patentibus ; articulis infimis sabteretibus, mediis lato- vel obovato- 

 cuiieatis subplanis, turn saepe attenuatis, superioribus foliiformibus 

 obovato-clavati« vel palmatis medio subcostato-elevatis, inarginibiis 

 plus iniiius utrinque undulatis ; geniculis inferioribus latitudine o- 

 plo brevioribus, superioribiis subpnnctiforDiibns; conceptaculis 



It bas tbin and sbort articuli at tbe basal portion ; but tbe 

 upper articidi are very br<)ad and foliaceons, giving rise to several 

 flat ramuli so as to form a digitate branch. The ventral surface of 

 the articuli is convex and the otlier slightly canaliculated at both 

 margins — the cross section, therefore, kmate. Xo transverse striation 

 could be seen. 



It is not very common, only a few specimens have been collected 

 at low tide mark : Misaki. 



10. Amphiroa canaliculata, Martens. 



1*1. i. fig. 20 : VI iV. fig. U-15. 



Fronde maximn, basi tereti, superne compresso-complanatn, 

 irregulariter dichotoma ; articulis compresis linenri-oblongis, dorso 

 convexis, ventre bi-canaliculatis, ultimis attenuatis ; geniculis brevis- 

 öimis ; conceptaculis dorso numen)sis.siiuis. 



Amphiroa canaliculata, Martens. Preus. Exp. n. Ostas. p. 

 28. Taf. \\. 



