. Fresh-water biology. Freshwater biology. FLAGELLATE PROTOZOA (MASTIGOPHORA) 267 188 (189) Colony ellipsoidal or spherical with cells reaching toward the center. Pandorina Bory de Saint Vincent. Representative species. Pandorina morum Bory de Saint Vincent 1824. Cells sixteen or thirty-two; enclosed within a definite membrane which does not touch the surface of the indi- viduals. Each cell bears two long flagella. Fig. 446. Pandorina morum. cv, contractile vacuole; 5^ stigma. X 250. (After Piingsheim.). 189 (188) Colony ellipsoidal with sixteen cells in four rows around a longi- tudinal axis.
. Fresh-water biology. Freshwater biology. FLAGELLATE PROTOZOA (MASTIGOPHORA) 267 188 (189) Colony ellipsoidal or spherical with cells reaching toward the center. Pandorina Bory de Saint Vincent. Representative species. Pandorina morum Bory de Saint Vincent 1824. Cells sixteen or thirty-two; enclosed within a definite membrane which does not touch the surface of the indi- viduals. Each cell bears two long flagella. Fig. 446. Pandorina morum. cv, contractile vacuole; 5^ stigma. X 250. (After Piingsheim.). 189 (188) Colony ellipsoidal with sixteen cells in four rows around a longi- tudinal axis. Each cell bears four ilagella. Spondylomorum Ehrenberg. Representative species. Spondylomorum qualernarium Ehrenberg 1848. Reproduction occurs by the cells of the colony separating and each individual building up a new colony by cell division. Colonies often produced in large numbers in pond water. Movements rapid, rotating on the long axis. Green in color. Very favorable conditions are necessary in order that the flagella may be seen and Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Ward, Henry Baldwin, 1865-1945; Whipple, George Chandler, 1866-1924. joint author. New York, John Wiley & sons, inc. ; [etc. ,etc. ]
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Keywords: ., bookcentury1900, bookdecade1910, booksubjectfreshwa, bookyear1918
