Three Species of Marine Ecballocystis. 



By 

 K. Yendo, RigahusM. 



With Plate VIIL 



ECBALLOCYSTIS WILLEANA, sp. nov. 

 (PI. VIIL fig. 1-15). 



Thallo elastico-submembranaceo initio solido tuberculato affixo postea 

 hemiaphEerico sinuato demum cavo basi margine ad substratum adha3rente 

 diametro 2-6 mm., atrovirescente, e cellulis in gelatinosa substantia inclusis 

 in longitudinali sectione tballi radiante dispositis et ad peripheriam dense 

 aggregatis, constante ; cellulis periphericis irregulariter clavatis deorsum at- 

 tenuatis vel oblongo-obovatis iufimis subglobosis basi nonnunquam dissolutis 

 fibrillosis, chromatophoribus cucuUatoformibus tptam fere cellulge prfeter 

 infimam partem occupautibu?, pyrenoidibus conspicuis singulis in roembrano 

 amyli intectis ;.zoosporangiis e cellularum contentu evolutis, zoosporis intra 

 singulas cellulas numerosis (8-16 ultra). 



Dimentiones cellularum : 19 x 9//— 18 x .5/^ — 17 x ?/>«. — 19 x 7/i— 

 18xl2/z-23x9/A 



Habit: in mari Pacifico ad littora portum " Renfrew/' B.C. 



ECBALLOCYSTIS JAPONICA, sp. nov. 



(PI. VIIL fig. 16-19.) 



Thallo elastico-membranaceo supra substratum maculfeformiter adh^erente 

 margine sinuato diametro 2-5 mm. atrovirescente, e cellulis in gelatinosa 

 substantia inclusis ad peripbaerianl dense aggregatis, constante ;. cellulis 

 periphaericis subangulatis irregulariter obovatis vel lunatis interioribus in- 

 fimisque subsphsericis vel globosis basi nonnunquam dissolutis fibrillosis, 

 chromatophoribus cucuUatoformibus totam fere cellulfee partem occupantibus, 

 pyrenoidibus conspicuis singulis in rnembrano amyli intectis, zoosporangiis 



Dimentiones cellularum : 12 x 7//— 13 x 10/i— 10 x 7//.— 5 x 4/^—5 xS/i, 

 Habit : in mari Pacifico ad caput " Shio '^ Japonias. 



