JAPANESE PALOLO, CEP ATOOEPII ALE OSAWAT, N. SP. 33 



Since taking up this subject of research, I have made a 

 series of observations on the time and periods of the swarming, 

 on the Sumida River in Tok) r o. In both the years 189G and 

 1897, the swarming occurred in four periods in the months of 

 October and November. The following tallies record my obser- 

 vations for these vears : 



Table I. 



1896. 



■■ Moon rise at 4.53 P.M. 

 t Moonrise at 4.02 P.M. 



