. Elements of comparative zoology. Zoology. 186 SYSTEMATIC ZOOLOGY. constant motion drawing small food particles to the mouth. As a result of this sedentary life the parapodia are often greatly reduced (fig. 39). Many of the Polychsetse are brightly colored and some are among the most beauti- ful objects in nature. In the development of many Polychsetes there occurs a larval form known as the trochophore, which bears no. Fig. 30.—A Tubicolous Polychsete (Amphitrite). At the upper end are the tentacles, and just below to the left the gills. resemblance to the adult. The body is oval or nearly s
. Elements of comparative zoology. Zoology. 186 SYSTEMATIC ZOOLOGY. constant motion drawing small food particles to the mouth. As a result of this sedentary life the parapodia are often greatly reduced (fig. 39). Many of the Polychsetse are brightly colored and some are among the most beauti- ful objects in nature. In the development of many Polychsetes there occurs a larval form known as the trochophore, which bears no. Fig. 30.—A Tubicolous Polychsete (Amphitrite). At the upper end are the tentacles, and just below to the left the gills. resemblance to the adult. The body is oval or nearly spherical and bears one or more circles of cilia. The mouth is at one side, the vent terminal. This becomes transformed into the worm by elongation and segmentation at the hinder end. The great interest connected with the trochophore is that similar larvas occur in other groups;. 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 Kingsley, J. S. (John Sterling), 1854-1929. New York, H. Holt and Company
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Keywords: ., bookcentury1900, bookdecade1900, booksubjectzoology, bookyear1904
