. Animal biology. Zoology; Biology. 192 METAZOAN PHYLA The fresh-water bryozoans (Fig. 104) form moss-Hke colonies attached to plants, sticks, or stones, usually near the surface of quiet water, though they have been found in Swiss lakes at a depth of over 40 Ovary, S-f-omach ; Lophophor-e. Sf-cffob/asis Fig. 104.—Fresh-water bryozoans. A, colony of Plumatella sp., growing on a frag- ment of a small branch of a tree. About natural size. B, several zooids of a colony of Plumatella repens (Linnaeus), a European species. {From Allman, "Monograph of Fresh- water ;) Highly magnifi
. Animal biology. Zoology; Biology. 192 METAZOAN PHYLA The fresh-water bryozoans (Fig. 104) form moss-Hke colonies attached to plants, sticks, or stones, usually near the surface of quiet water, though they have been found in Swiss lakes at a depth of over 40 Ovary, S-f-omach ; Lophophor-e. Sf-cffob/asis Fig. 104.—Fresh-water bryozoans. A, colony of Plumatella sp., growing on a frag- ment of a small branch of a tree. About natural size. B, several zooids of a colony of Plumatella repens (Linnaeus), a European species. {From Allman, "Monograph of Fresh- water ;) Highly magnified. fathoms. Some have the power of movement, the whole colony very slowly crawhng along on its base. These fresh-water forms have developed a type of winter egg known as a statohlast (Fig. 105), which is produced in. 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 Wolcott, Robert Henry, 1868-1934; University of Nebraska (Lincoln campus). Dept. of Zoology. New York ; London : McGraw-Hill Book Company, Inc.
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