6 ART. 12. — K. YENDO. 



to the writer. The whole responsibility, however, with respect to 

 the references and determination, rests with the present author. 



The species described by Harvey as new, in his paper 

 entitled " Characters of New Algie," 1. c, were not described in 

 full, and none of them were illustrated by the author or by 

 any subsequent botanist. These species, indeed, have been the 

 hardest nuts to crack in the study of the Sargassutn of Japan. 

 Prof. P. Y,. Wright of Trinity College, Dublin, where the 

 original specimens of Harvey's species are kept, generously 

 saved me much time and trouble, by picking out the specimens 

 and taking photographs of each. If PIarvey's s})ecies are in 

 the present paper correctly determined, which the writer may 

 hope to be the case, it is due to the generous help of l*rofessor 

 Wright. 



The best thanks of the writer are due to Prof. Dr. J. 

 Matsumura under whose care the present work has been carried 

 on ; and the writer can not sufhciently express his thankfulness 

 to Dr. K. KiSHiNOUYE, Prof. K. Miyabe, Major Thi:o. Eeix- 

 -BOLD and Prof. P. Wjught for their kind liel}) in tlie ways 

 noted above. 'J'o Prof. Dr. M. Miyosjh, Dr. K. Okamura and 

 others he begs to acknowledge his indebtedness for helj) given 

 him in references or specimens which were indispensable in 

 the course of this study. 



Tokyo, November, r.>OG. 



