25 243 
2(r) — 3(c) — Ser) — 6 (rr) — 7 (rr). 
Area: Atlantic Ocean at 10° N. 538° W., Gulf of Bengal, 
Malay Archipelago, China Sea. 
Biddulphia Gray. 
69. B. chinensis Grev., Trans. Microsc. Soc. 1866, 
p. 81, Pl. 9, f.16; Leuduger-Fortmorel, 1. c. p.39; Cleve, a ty 
Diat. f. the Sea of Java 1873, p.6; Ostenfeld & Schmidt, |--:----~. 
Pl. f. the Red Sea, etc. p. 152, f.6; A. Schmidt, Atlag der [~~ ie 
Diat. Kunde Pl. 122, f. 22—24. 
I have given figures of this species and of the following 
showing the different direction of the processes and the 
spines. 
3(+) — 5(rr) — L0 (rr). 
Area: Red Sea, Malay Archipelago, South China Sea. 
70. B. mobilensis Bail., Am. Journ. Sc. 1845, p. 336, 
Pl. 4, f.24; Van Heurck, Synopsis Pl. 101, f. 4, PI. 108, 
f. A; Cleve, Atlant. Plankt. Organisms, p.288; Schréder, 
Neapel p. 30; B. Baileyi Smith, Brit. Diat. Il, p. 50, Fig, 21. 
Pl. 45, f. 322, Pl. 62, f. 322; Leuduger-Fortmorel, 1. ¢. Biddulphia 
p. 38; Denticella mobiliensis Grun., de Wildeman, 1. c. ¢himensis Grev. 
p. 127. a 
A(r) — 3(rr) — 4(rr) — S(rr) — 6 (rr). 
Area: Along the Coasts of West-Europe and North- 
America, Mediterranean, Indian Ocean, Malay Archipelago, 
Pacific Ocean. Neritic species. 
Cerataulina Perag. 
71. ©. Bergonii Perag., Monogr. du genre Rhizoso- 
lenia, Le Diatomiste vol. I, p. 103, Pl. 1, f.15, 16; Schro- 
der, Neapel p. 30 (var. elongata); Cleve, Bih. t. Sv. Vet. 
Akad. Handl. Bd. 20, 3, 1894, No. 2, p. 11, Pl. 1, f. 6; 
Atl. Plankt. Organisms p. 288, Pl. f. the Red Sea, p. 1032; 
Ostenfeld & Schmidt, Pl, f. the Red Sea, etc. p. 152; Fig. 22. 
Zygoceros (2) pelagicum Cleve, Kanonbaaden ,Hauch*s  Biddulphia 
Togter, Kjobenhavn (1889), p. 54. mobilensis Bail. 
6 (rr) — 10 (rr). as 
Area: Temperate N. Atlantic Ocean, Mediterranean, Red Sea, Gulf of Aden. 
72. . compacta Ostf. in Ostenfeld & Schmidt, Pl. f. the Red Sea, 
1901, p.153, f.7; BRhizosolenia (Guinardia?) recta Cleve, Pl. f. the Indian 
Ocean and the Malay Archipelago 1902, p.23 and p.57, Pl. VIII, f. 7a,b. 
16* 
