490 CLEVE, DIATOMS. 



31. (mediterranea 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. PL LXXXV, fig. 5—7) 

 GreenL, BesseLs 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 horeaUs Bail. (A. Schm. Atl. LXIII, fig. 11). 

 JEndictya oceanica Ehb. 

 Chcetoceros aflanficus CI. 

 Wdzosoleyiia styliformis Btw. 

 Bh. hebeta Bail. 



III. Fresh-water diatoms from Japan. 



In Japan Dr. Kjellman made some gatherings 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: 



Ampliora affinis Ktitz. 



Cymhella cuspid(da Kiitz. Length 0,092. Breadth 0,024 mm. 

 Strise 10 in the middle, 12 near the ends. 



C. affinis Kiitz. 



C. gastroides Kiitz. 



C. cymhlformis Ehb. 



C. Cishda Hempr. 



C. tumida Breb. 



Encyonema cccspitosum Kiitz. 



Epithemia gihha (Ehb.). 



E. gibhenda Kiitz. 



