490 



CLEVE, DIATOMS. 



M. (mediierranea Grun. var.?) gelida CI. — Surface of the 

 valve covered near the margin with puncta arranged in curved 

 lines crossing ■ each other, about 25 in 0,oi mm. Diam 0,o2 

 —0,03 mm. PL 38, fig. 83 a. b. — Mushroom Point. 



M. ornata Grun. (Van Heurck Syn. XCI, fig. 19—21) F. J. L. 



M. Borreri Grev. (Van Heurck Syn. PI. LXXXV, fig. 5—7) 

 Greenl., Bessel's Bay. 



II. Surface-diatoms from the Behring Sea. 



Dr. Kjellman has collected in the Behring Sea diatoms 

 living on the surface. The gathering contained: 



Thalassiothrix longissima CI. & Grun. in great abundance. 

 Coscinodiscus horealis Bail. (A. Schm. Atl. LXIII, fig. 11). 

 Endictya oceanica Ehb. 

 Chcetoceros atlanticus G\. 

 Bhizosolenia styliformis Btw. 

 Bh. hebeta Bail. 



III. Fresh-water diatoms from Japan. 



In Japan Dr. Kjellman made some gafherings of fresh-water 

 diatoms, interesting because most of the species were perfectly 

 identical with European ones. I have observed the following 

 species, of which the greater part has been determined with 

 the aid of Van Heurck' s synopsis: 



Amphora affinis Kiitz. ' 



Cymbella cuspidata Kiitz. Length 0,092. Breadth 0,024 mm. 

 Striae 10 in the middle, 12 near the ends. 



C. affinis Kiitz. 



C. gastroides Kiitz. 



C. cymMformis Ehb. 



C. Cistula Hempr. 



C. tumida Breb. 



Eucyonema ccespitosum Kiitz. 



Epithemia gibha (Ehb.). 



E. gibherula Kiitz. 



