CONTENTS. 



Art, 1. — Studies on the Hexactinellida. Contribution III. (Placosoma, a 



New Euplectellid ; Leucopsacidœ and Ccmlopliacida^j. (With 8 plates). 



By I. IjiMA-Publ. May 5tb, 1903. 

 Art. 2.— Cretaceous Cephalopoda from the Hokkaido. Part I. Lytoceras, 



Gaudnjccras and Tetrar/oitites. (With 7 plates). By H. Yabe. — • 



Publ. June Stb, 1903. 

 Art. 3.— On the Formation cf Anthocyan in the Petaloid Calyx of the Red 



Japanese Hortense. (With one plate). By T. IcHnirnA.-Pubb 



June 20tb, 1903. 

 Art. 4. — On the Comparative Anatomy of the Cucurbitacese, Wild and 



Cultivated in Japan. (With 5 plates). By A. Yasuda. — Publ. Sept. 



I5tb, 1903. 

 Art. 5. — Untersuchungen über die atmosphärischen Pilzkeime. (Mi" -5 



Tafeln). Von K Saito.— Publ. Jan. •28th, 1904. 

 Art. 6.— On Some Jurassic Fossils from Rikuzen. (With 2 plates). By 



M. Yokoyama— Publ. Feb. 1st, 1904. 

 Art. 7.— Studies on the Hexactineîlida. Contribution IV. (Enssel liehe). 



(With 2:i plates). By I. IJIMA.— Publ. June 18th, 1904. 

 Art. 8.— Compositae Formosanœ. (With 2 plates). By B. Hayata. - Publ. 



Aui^- 13tb, 1904. 



PRINTED BY THE " TOKYO PRINTING COMPANY, LIMITED." 



