Report of the Imperial Fisheries Institute 

 Tokyo Japan. 



Vol. VII. No. IV. 



SOME LITTORAL DIATOMS OF JAPAN. 



BY 



K. OKAMURA, Rtgakuhakushi. 



Algologist to the Imperial Fisheries Institute. 



With Plates VIII— XIII. 



The following list of diatoms was drawn up chiefly from the materials 

 collected by myself on the coast of Prov. Boshyu (near the entrance to 

 the Gulf of Tokyo) at Shirahama and Tateyama in several years mostly 

 during earlv summer and partlv from those collected in many other 

 different localities in different seasons. They are for the most part 

 littoral diatoms excepting a few oceanic forms, and though there is 

 nothing new to contribute to the science, yet the work of this kind is 

 needed in this county where this branch of science is not much studied 

 as a speciality. 



As there lies a great difficulty experienced by the workers in this part 

 of the world in getting access to the literature bearing on the subject, I 

 have given figures of all the enlisted species in the plates to illustrate 

 on one hand what I have observed and on the other to aid the students 

 in the work of identification. The references I have given under 

 each species in the list are only those I have been able to take into 

 consideration. 



Steplianopyxis Ehrenb. 



1. Stephanopyxis Palmeriana (Grev.) Grun. var. Japonica Grun. 



A. Schm. Atlas t. 130, f. 44, t. 123, f. 1.; De Toni Syll. Alg. II, p. 1141. 



PI. VIII, fig. 1. 

 Loc : Shirahama (Prov. Boshyu) ; Cape Goza (Prov. Shima) ; 

 Alisaki (Prov. Sagami). 



