CONTENTS. 



(Published July 27th, 1915). 



Page 



Eine neue Ascidienart aus der Gattung Agnosia Michaelsen. 



Von Dr. Asajiro Oka 1 



On a New Polycystid Gregarine, Spirosoma caudatum nov. gen. et 

 nov. sp., from a Diplopod. 



By Shigemi Ishii, Rigakushi 7 



On the Hemerobiinae of Japan. (With Pl. I). 



By Waro Nakahara 11 



The Fate of the Peristomal Mesoderm and the Tail in Petromyzon. 



By S. Hatta 49 



A Case of Prolapsus Recti in Dragonfly. 



By Kan Oguma 63 



Bird-Infesting Mallophaga of Japan. (Genus Pliysostoihuiri). 



By Seinosuke Uchida .: 67 



