— 3 — 



Stephanopyxis Ehbg. 



2. S. Palmeriana (Grev.) Grun. , Diat. Franz Joseph Land p. 38 ; 

 A.Schmidt, Atlas d. Diat. Kunde, Pl. 130, f. 1, Pl. 123, f. 41 (f. javanica 

 Grun.) ; Leuduger-Fortmorel, Diatomées de la Malaisie, Ann. du Jard. bot. 

 de Buitenzorg, XI, 1893, p. 45; Otto Müller, Ber. Deutsch. Botan. Gesellsch. 

 1901, Bd. 19, p. 196, f. 1. Creswellia Palmeriana Grev., Trans. Microsc. 

 Soc. 1865, p. 2, Pl. 1, f. 9; Cleve, Diat. f. the Sea of Java, Bih. till K. 

 Svenska Vet. Akad. Handl. Bd. 1, 11, 1873, p. 8. 



10 (it). 



Area: Neritic species, found in the Malay Archipelago, South China Sea, 

 Arafura Sea, Australia. 



Sceletonema Grev. 



3. S. costatum (Grev.) Cleve, Diat. of the Sea of Java, 1873, p. 7 : 

 Leuduger-Fortmorel, 1. c. p. 47; Van Heurck, Synopsis PI. 91, f. 4; de 

 Wildeman, Prodrome de la flore algologique des Indes Néerlandaises, 1897, 

 p. 130; Lemmermann, Planktonalgen, Ergebnisse einer Reise nach dem 

 Pacific, Abh. Nat. Verein, Bremen, XVI, 2, 1899, p. 317 and 329; Cleve, 

 Atl. Plankton Organisms, p. 351 ; A Treatise of Phytoplankton, Upsala, 

 1897, p. 25; PI. f. the Indian Ocean and the Malay Archipelago, p. 23, 

 K. Sv. Vet. Akad. Handl. 35, No. 5, 1901 [1902]. 



1 (+) - 2 (rr) - 6 (rr). 



Area: Baltic, North Sea, Coasts of British Isles, Ireland, Shetland to 

 Westmannaö (South of Iceland). Gulf of Bengal, Malay Archipelago, Pearl Har- 

 bour at Oahu (Sandwich Islands). Certainly a neritic species of the temperate 

 and subtropical regions of all oceans. 



Coscinodiscus Ehbg. 



4. C. bengalensis Grun., Van Heurck, Synopsis, PI. 132, f. 9; Rattray, 

 Coscinodiscus, Proc. Royal Soc. Edinburgh, vol. 16, 1888 — 89, p. 580; 

 Cleve, Pl. f. the Ind. Ocean and the Malay Archip., p. 20. 



I refer a small form with radially arranged rows of very fine markings 

 to this species. 



2(rr) - 3(rr). 



Area: Gulf of Bengal, Malay Archipelago. 



5. C. excentricus Ehbg., Abh. Berl. Akad. 1839, p. 146, Mikrogeo- 

 logie tab. 18. f. 32, tab. 21, f. 6; Van Heurck, Synopsis, PI. 130, f. 4, 7 ; 

 Leuduger-Fortmorel, 1. c. p. 44 ; de Wildeman, 1. c. p. 143; Cleve, Atl. 

 Plankt. Organisms, p. 318; PI. f. the S. Atlantic and the S. Indian Ocean, 

 Öfv. af K. Sv. Vetensk. Forhandl. 1900, No. 8 [1901], p. 930; PI. f. the 

 lnd. Ocean and the Malay Archip., p. 20. 



1* 



