SOME LITTORAL DIATOMS OF JAPAN*. 5 



Area : Tropical Atlantic Ocean, the Mediterranean ; Red Sea, 

 Indian Ocean, Malay Archipelago, Pacific Ocean. 



19. R. amputata Ostf. in Schmidt's Flora of Koh Chang p. 227, f. 4. 



PI. IX, fig. 19. 

 Loc: Prov. Shima, Shinkawa (Prov. Mikawa). 

 Area : Gulf of Siam ; Pacific Ocean. 



20. R. Clerei Ostf. in Schmidt's Flora of Koh Chang p. 229, f. 6. 



PI. IX, fig. 20. 

 Loc: Prov. Tosa. 

 Area : Gulf of Siam, Pacific Ocean. 



21. R. Shrubsolei Cleve Some new and little known Diat. p. 26 ; 

 Peragallo Monog. Rhizos. p. 19, t. 5, f. 8, 9 ; Gran in Brandt 

 u. Apst. Nord. Plank, p. 52, f. 63 ; Ostf. in Schmidt's Flora of Koh 

 Chang p. 230.— R. atlantica Perag. Monog. Rhiz. p. 114-, t. 5, f. 4, 5. 



PI. IX, fig. 21. 

 Loc: Prov. Tosa and Mikawa, Tateyama ; Yeddo Bay (Cleve). 

 Area : Atlantic Ocean, Mediterranean, Red Sea, Gulf of Aden, 

 Indian Ocean, Malay Archipelago. 



22. R. setigera Brightw.; Peragallo Monog. Rhizos. p. 17, t. IV, f. 12- 

 16; Gran in Brandt u. Apst. Nord. Plank, p. 53, f. 64 ; Hensen Bestim. 

 Plankt. Kiel. p. 85, t. 5, f. 38 ; Cleve Report Phytopl. Research f. 12. 



PI. IX, fig. 22. 

 Loc: Cape Goza (Prov. Shima), Misaki (Prov. Sagami, Yendo). 

 Area : Atlantic coasts of Europe and north of S. America ; the 



Mediterranean, Red Sea, Indian Ocean, Malay Archipelago, Pacific 



Ocean. — Xeritic species. 



23. R. styliformis Brightw. Perag. Monog. Rhiz. p. 16, t. 4, f. 1-5 ; 

 Gran PI. Norw. Xordm. p. 173, T. 1, f. 1-9 ; Ostf. in Schmidt's 

 Flora of Koh Chang p. 231 ; Cleve Rep. Phytopl. Research p. 301. 



PI. X, fig. 23, a. 

 Loc: Prov. Shima, Mikawa. 



Area : Most parts of the Atlantic Ocean, Mediterranean, Red Sea, 



Indian Ocean, Malay Archipelago, Pacific Ocean, Antarctic Sea. 



23 bis. R. styliformis Btw. var. latissima Btw. Ostf. in Schmidt's Fl. 



Koh Chang p. 231 ; R. styliformis var. polvdactyla (Castr.) Perag., 



Monog. Rhiz. p. 16, PI 4, f. 7; R. polvdactyla Castr., Challenger 



Report p. 71, Pi. 24, f. 2. PI. X, fig. 23, b-e. 



Loc: Prov. Shima and Tosa. 



Area : Antarctic Ocean, Mala}- Archipelago, New Zealand. 



