. Flora of Koh Chang : contributions to the knowledge of the vegetation in the Gulf of Siam . Botany. Vi 300 n broad, the valves are semi-luuate with very tine radiating points, hyahne central space and coarser points within the margins, but the more robust stria; which Van Heurck 1. c. p. 539 mentions, are only obscure in my form. The girdle is very unequal, narrow on the straight side and very broad on the curved side, so that the whole fruslule resembles a piece of an orange. Curious is a curved fissure on the valves; in most specimens which 1 have seen, this fissure was a place of rel'uge
. Flora of Koh Chang : contributions to the knowledge of the vegetation in the Gulf of Siam . Botany. Vi 300 n broad, the valves are semi-luuate with very tine radiating points, hyahne central space and coarser points within the margins, but the more robust stria; which Van Heurck 1. c. p. 539 mentions, are only obscure in my form. The girdle is very unequal, narrow on the straight side and very broad on the curved side, so that the whole fruslule resembles a piece of an orange. Curious is a curved fissure on the valves; in most specimens which 1 have seen, this fissure was a place of rel'uge for a little protist, probably. Fit;', 1. Faliiieria Hnrdinaniana Gvev. Cells in dilTei-ent views I Fig-, i!. Fulineria Hanhnaniaiia Grev. showing the Amphorella's to the scale. ('"") an Ainphorvlla horeulis (Hensen) Dad., var. nov.; the small, more or less numerous, organisms were fixed to the inner side of the fissure. Ghromatophores are numerous, small, dispersed on the inner side of the frustules; the nucleus is placed close to the one valve. Professor Cleve seems to take this large diatom as an assym- metrical form of Cosciuodiscus hoMUs-, but 1 am quite convinced that this is not the case; on the other hand I believe, that the genus Palmeria is close to Cosciiiodiscus, and that Schiitt in Engler & Prantl has made a mistake in placing his Euodiu (inch Palmeria) among the BiddulpMoideae, remote from the Discoideae. I should prefer placing it close to the genera Etldiiodiscits and CoscUhxHscus. yin-) — 7 (it) — 10 (IT). Area: Malay Aichipelago, China. Actinodisceae. Asterolampra Ehbg. 11. A. rotula Grcv. in Transact. Microsc. Soc. 1S60, |i. Ill, PI. 3, f. 5; Lemmermann, p. 317 and 319, PI. iJ, f. 35; Ostenfeld & SchmidI, PI. f. the Sea etc., Vid. Medd. Nath. For. Kjobenhavn, 1901, p. 152; Schroder, Phyloplanktou des Golfes von Neapel, Mitteil. a. d. Zool. Stat, zu. Please note that these images are extracted from scanned page image
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