ZOOLOGY AND BOTANY, MICROSCOPY, ETC. 
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green symbiotic algae. The red pigment is of the nature of a lipocbrome. 
The protoplasm contains crystals of calcium oxalate. 
An organism found in constant association with the Chlamydomyxa , 
and believed by some .to be genetically associated with it, is identified 
by the author as Urococcus Hooherianus (Bab. non Hass.) 
Chlamydomyxa must be regarded as the lowest type of the Algae 
characterised by yellow-brown chromatopliores. 
Hew Unicellular Algae.* — In the shallow fresh waters near Stock- 
holm, Herr K. Bohlin finds representatives of no less than three new 
genera of Unicellular Algae, viz. : — 
Brachiomonas g. n., belonging to the Chlamydomonadeae, and distin- 
guished from the other genera of that family chiefly by the peculiar 
form of the cell. The body of the cell has five appendages, one poste- 
rior in the direction of the length of the cell ; the remaining four 
arranged symmetrically on the sides, and forming a cross. Each cell 
contains a nucleus and pyrenoid, and is provided with two cilia. It 
propagates by division, the final product being gametes, with very much 
the form of the mother-cell. Two species are described, Brachiomonas 
submarina and gracilis. 
Chloramoeba g. n. The usually round or broadly elliptical cell is 
naked ; the external layer of protoplasm gives rise to amoeboid move- 
ments. It is biciliated, the two cilia being of very unequal length. The 
green colour disappears in the dark. It multiplies with extraordinary 
rapidity, the cells being filled with a white oil. The author places the 
genus among the Chloromonadeae of Klebs, along with Vacuolaria and 
Baphidomonas. 
Phseodactylum g. n. Each cell has the form of a star, the three 
narrow arms lying in one plane, and forming square angles with one 
another. In each cell is a parietal yellowish-brown chromatophore. 
Multiplication takes place by division in a plane passing through ail 
the arms. The author proposes to form, from this genus and Stichogloea 
Chod., a family of yellow-brown algae parallel to the Pleurococcaceae 
among green algae. 
The author further describes Chlorogonium letragonum sp. n., in which 
the gametes are produced by simple quadriparfcition of the contents of 
the mother-cell; and Oocystis Echidna sp. n., the membrane of which is 
covered with long slender spines. 
Fungi. 
Nitrogenous Pigments of Eungi.t— M. B. Van den Dries finds, in 
Aspergillus niger , A. fuliginosus, and Polyporus sulphur eus, nitrogenous 
pigments of the nature of aspergillin. These substances are nearly 
related to one another, but are not identical. They have an acid reac- 
tion, and are probably true amides. Aspergillin is not a haematine; it 
does not contain a trace of iron, and docs not exhibit its characteristic 
band in its spectrum. Aspergillin is very nearly related to the tannins. 
In other species of Aspergillus, and in Fusarium Hordei, colouring 
matters of a very different character were found, including one with a 
basic reaction. 
* Ofv. k. vetensk. Ahad. Forhandl. Stockholm, 1897, jp. £07-30 (9 figs.) 
(German). f La Cellule, xiii. (1897.) pp. 413-46. 
