. Botanisk tidsskrift. Plants; Plants -- Denmark. 21 This species belongs to the subgenus Phaeoceras Gran, which has numerous small chromatophores, also in the awns. 10 (r). Area: Red Sea, Malay Archipelago, South China Sea. 57. C. Schiiiidtii Ostf. in Ostenfekl & Schmidt, Plankt. 1". the Red Sea, etc. p. 155, f. 8; ?C. Weissflogii Gleve, PI. f. the Indian Ocean and the Malay Archip. p. 15 and p. 55, non Schiitt. This species which 1 have described from the Red Sea, occurs also in the Gulf of Siam; and I suppose that it is the same which Gleve 1. c. has identified with C. Weissflogii
. Botanisk tidsskrift. Plants; Plants -- Denmark. 21 This species belongs to the subgenus Phaeoceras Gran, which has numerous small chromatophores, also in the awns. 10 (r). Area: Red Sea, Malay Archipelago, South China Sea. 57. C. Schiiiidtii Ostf. in Ostenfekl & Schmidt, Plankt. 1". the Red Sea, etc. p. 155, f. 8; ?C. Weissflogii Gleve, PI. f. the Indian Ocean and the Malay Archip. p. 15 and p. 55, non Schiitt. This species which 1 have described from the Red Sea, occurs also in the Gulf of Siam; and I suppose that it is the same which Gleve 1. c. has identified with C. Weissflogii with hesitation. 10 (r). Area: Red Sea, Malay Archipelago(?). 58. C. seciindiini Gleve, Diat. f. the Sea of Java 1873, [). 10, PI. 11, f. Ua, b; Leuduger-Fortmorel, p. 37; de Wildeman, p. 134; Van Heurck, Synops., PI. 82, f. 5; C. curvisetum Gleve, PI. f. the Ind. Ocean and the Malay Archipelago 1902, p. 18 and p. 55, n o n Gleve, in Kanonbaaden Hauchs Togter, Kjo- benhavn, 1889, p. 55 with fig. Professor Gleve supposes (in his last paper ( 1902, p. 55)) that the Indian C. secundum is the same as C. curvisetum from the Temperate Atlantic, but I can not enter upon this opinion, as the spores of C. secundum figured by Gleve himself (1873, PI. II, f. 14 a) are rather different from the spores of C. curvisetum (see Gran, Protophyta, PI. II, f. 22). i2 (rr) - 8 (r) - 4 (rr) - 5 (rr) — 6frr) - 10 (r). Area: Malay Archipelago. 59. C. siainensc Ostf. n. sp. Chains straight, about 50/^ broad; valves circular; fora- mina lanceolate; hoop at least a third part of the cell; chro- matophores two, close to the valves; awns all alike, rather robust, undulated ; the one about in the sagittal plane, the other diverging at a nearly. Fig. 17. Chaetoceras siamense Ostf., right angle. soo. Chain in front view, cell in side view {-^). Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance
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