CONTENTS. 



Fear-borer (Xephopteryx rubrizonella, llag.) .1/. Matmmura 1 



< )n Two New Species of Astheuosouia from the Sea of Sugami. ...S. Yoshiwara 5 



Chaetognaths of Misaki Harbor < T. Aida 13 



Ott the Accommodation of Some Infusoria to the Solutions of 



Certain Substances in Various Concentrations 4. Ytuuda 23 



On Changes which are found with Advancing Age in the Calcare- 

 ous Deposits of Stichopus japonicus, Selenka K. Mittukuri 31 



Revision of Hexactint'lliils with Diseoctasters, with Descriptions 



of Five Xew Species... /. Ijima 13 



Miscellaneous Notes 61 



Ueber eine in Jlisaki vorkommende -Art von Ephelota und über ilire Sporenbildung, von C. Tsiiikaw.v. — 

 Die Entwickelung der (ionophoren liei l'hysalia maxima, von S. Goto.— On tlie Fate of the Blastopore, 

 tlie Relations of the Primitive Streak, and the Formation of the Posterior End of the Embryo in 

 Chelonia, together with Remarks on the Nature of Meroblastic Ova in Vertebrates, by K. Mitsuki'RI. 

 —Living Specimen of PlejirotomHria Beyricltfi. — The Ophinran Shoal.— Zoological Society of Tokyo. — 

 Eist of Japanese Zoologists. 



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