WoRMS source details
Publication date: 1 July 1903
The investigation, the results of which are embodied in the following pages, was begun in the summer of 1896 and carried on at intervals during the three following years, partly in the Laboratory of the Zoological Institute and partly in a room hired for the purpose of facilitating the collection of fresh materials.
The subject was taken up at the suggestion of Professor Ijima, who has also kindly undertaken the work of revising the manuscript. To him and also to Professor Mitsukuri I beg to express my sincere thanks for the help and advice which they have frequently extended to me in connection with my work. Further I am under deep obligation to Professor K. Osawa of the medical college, who, being himself much interested in observing the breeding and swarming habits of the worm described in this paper, has favored me with valuable information and suggestions.
Systematics, Taxonomy
Syntype UMUTZ Ann-Pc-133, geounit Tokyo, identified as Ceratocephale osawai Izuka, 1903
Syntype UMUTZ Ann-Pc-51, geounit Boso Peninsula, identified as Ceratocephale osawai Izuka, 1903
''They are [...] very active and voracious, feeding on various aquatic animals and plants.'' (Izuka, 1903: 5). [details]
NW Pacific Ocean: Honshu Island, Japan. Along the Sumida River, Tokyo, for a distance along six miles from its ... [details]
The specific epithet osawai is given ''in honour of Professor K. Osawa, whose interest in the study of the worm I ... [details]
Atokous specimens live in the littoral, between tide marks, burrowing in the mud or sand to a depth of a foot or ... [details]
''Ceratocephale osawai is one of the most common littoral Annelids in Tokyo and vicinity, where it is extensively ... [details]
Swarms during the nights closely following the new and full moon in October and November (Sumida River, Tokyo, ... [details]
Honshu Island, Japan, NW Pacific Ocean. The species was described with base on material collected mainly in Tokyo ... [details]
Specimens from Izuka's collection deposited at the University Museum of the University of Tokyo with the numbers ... [details]
